Falling asleep takes an hour: why it happens and what helps

7.30 pm: teeth brushed, two books read, light off, door ajar. 8.35 pm: your child is singing, rolling over, asking for water, suddenly hungry and telling you through the open door all about the afternoon snack at nursery. When falling asleep takes an hour, the evening turns into a second shift – every day, not just at the weekend. Many parents start wondering whether something is wrong with their child's sleep. Usually nothing is wrong with the child, and something is wrong with the timing, the shape of the day or the last hour before bed. That is exactly what you can change, without pressure and without pushing your child.

The short answer: around 15 to 30 minutes from lights out to actually falling asleep is normal. If your child regularly needs 30 to 45 minutes or more, it is worth looking more closely – not at your child, but at the day beforehand. The most common cause is a bedtime that sits ahead of your child's natural sleep pressure: they lie awake because they are not tired enough yet. Shifting bedtime later in 20-minute steps, taking the excitement out of the last hour and keeping a predictable routine resolves most cases within two weeks.

What is normal? Time to fall asleep in numbers

Specialists call the time between lights out and actually falling asleep sleep-onset latency. The professional literature takes 15 to 30 minutes to be the norm in healthy children. In other words: a child who chatters away for twenty minutes after the goodnight kiss, talks to a soft toy and turns over three times is falling asleep perfectly normally. That time is not lost sleep – it is part of winding down.

It becomes notable when your child regularly needs 30 to 45 minutes or longer over several weeks and bedtime turns into a struggle for everyone. A single long evening after a birthday party or in excited anticipation of a visit from grandparents means nothing; what matters is the pattern over seven to ten days. Look at two numbers at the same time: how long falling asleep takes, and how much sleep adds up in the end. A child who takes a long time but wakes up by themselves in a good mood is getting enough sleep – they are simply lying awake too long. How much sleep your child actually needs at their age is the second half of the answer.

These figures are a frame of reference, not a rule. Within a single kindergarten group, two hours can easily separate the child with the smallest sleep need from the one with the largest.

When a child takes a long time to fall asleep: the seven most common causes

Put to bed too early. The classic. Bedtime dates back to when your child still had a two-hour nap or got up half an hour earlier. The body builds up sleep pressure over the course of the day; if bedtime comes before that, your child lies awake. This is not defiance, it is biology.

A nap that is too long or too late. A child still sleeping for an hour and a half at 3.30 pm simply has no sleep pressure left at 7.30 pm.

Too little movement during the day. A week of rain, the car instead of the bike, a lot of sitting at nursery: the body has not filed the day away as tiring.

Too much excitement in the last hour. Romping around with dad, a screen, loud music, visitors – the nervous system then needs 30 to 60 minutes to come back down.

Bedtime support that has become a habit. When falling asleep only works with a hand held, songs and constant presence, the support often stretches from ten minutes to fifty.

Fear and being alone. Between three and six, imagination grows faster than the ability to put it into perspective. Fear wakes a child up, it does not make them tired.

Light and noise. Summer evenings, a street lamp, dishes clattering in the kitchen: anything signalling "it is still daytime" delays sleep onset.

Cause number one in detail: bedtime and sleep pressure

Picture sleep pressure as a glass that fills up over the day. It is emptied by sleep – completely at night, partly by a nap. Only when the glass is full does your child fall asleep quickly. For a four-year-old who wakes at 6.45 am and no longer naps, the glass is full somewhere between 7.30 and 8.30 pm, depending on the child. Put them to bed at 7 pm anyway and 60 to 90 minutes of lying awake are built in from the start.

The second factor is the body clock. In the one and a half to two hours before their natural sleep-onset time, many children are especially wide awake – specialists describe a window in which falling asleep is biologically almost impossible. Putting a child to bed in the middle of that window means fighting the clock. That is why an over-early bedtime so often disguises itself as "my child refuses to sleep".

In practice: count back from the time your child has to get up. If they need to be up at 6.45 am and require around 11 hours of sleep, 7.45 pm is a realistic bedtime – not 7 pm. You will find age-based guidance in our bedtime chart.

Naps, movement and the last hour

Adjust the nap rather than scrapping it

Between three and four, the daytime nap disappears for many children. At nursery, though, napping often continues because the whole group has a rest period. If your child needs more than an hour to fall asleep in the evening, first shorten the nap to 45 minutes and set the wake-up time to 2 pm at the latest. Only if that is not enough does the nap turn into quiet time with an audio story. We have described separately how to drop the nap without tipping into overtiredness.

Movement belongs in the morning and afternoon

Two to three hours outdoors, at least one of them genuinely active, is a good benchmark for a kindergarten-age child. The timing matters: charging about after the evening meal is waking, a trip to the playground at 4 pm is tiring.

Keep the last hour calm and always the same

Plan 45 to 60 minutes of evening programme in the same order every night: supper, bath or wash, pyjamas, teeth, two books, light off. No screens in that hour, no tickling sessions, no important conversations about tomorrow's nursery day. Predictability saves negotiations – and negotiations cost minutes.

Light, noise and temperature: the room as a quiet player

In June it is still light at 8.30 pm; in December it is dark at 5 pm – and your child is supposed to fall asleep at the same time in both cases. Bright light in the evening shifts the body clock later. So dim the lights in the living area from supper onwards and skip the ceiling light in the bedroom; a small clip-on lamp on the shelf is plenty for reading. How far to go depends on the child: some need real darkness, others cope better with a small light source. Our notes on blacking out a child's bedroom will help you decide.

For temperature, around 18 °C is a good guide in a child's room; for older children 18 to 20 °C is fine. An over-warm room measurably lengthens the time to fall asleep, because the body has to lower its core temperature to drop off. So air the room briefly and thoroughly before bed. With noise, it is not the volume that counts but the change: a steady hum from the street disturbs less than a single slamming door. Push noisy kitchen work back or close the doors in between.

Fear, being alone and support that keeps getting longer

From about three, children develop a blossoming imagination. The shadow of a jacket becomes an animal, a creak in an old floor becomes footsteps. Fear activates the body – an anxious child lies awake even when exhausted. So take the fear seriously and make it small rather than talking it away: look under the bed together, put a torch next to the bed, leave the door open at a fixed gap and say so out loud ("the door stays exactly as it is now"). There is more in our article on children being afraid of the dark.

The second trap is bedtime support that creeps outwards. "Mum sits by the bed for two minutes" becomes "Mum lies next to me for 50 minutes and is not allowed to move". That is not a parenting mistake, it is a habit both of you have learned. The way out is slow reduction: one week sitting on the edge of the bed instead of lying down, the next week on a chair a metre further away, then by the door. Two to three weeks is realistic. We describe the steps in our piece on ending bedtime support.

Myths fact-checked

"More tired at bedtime means falling asleep faster." Wrong – at least beyond a certain point. A moderately tired child falls asleep quickly; an overtired child becomes wired, cries more easily and takes longer. The professional literature explains this with stress hormones that rise with overtiredness. The target is "tired", not "done in".

"Sleeping in the day means sleeping worse at night." Only half true. An age-appropriate nap does not disturb night sleep. It becomes a problem when it is too long or ends too late. So do not cut it entirely – move it earlier and shorten it.

"Running around in the evening helps with falling asleep." Movement during the day helps, roughhousing in the last hour does not. After intense activity, the body needs half an hour to an hour for pulse and temperature to come back down.

"My child simply needs less sleep." Sometimes true, often not. Check three signs: does your child wake up by themselves at the weekend? Are they in a good mood until the afternoon snack? Do they fall asleep in the car within five minutes? Two noes and one yes argue against a small sleep need. And please: no melatonin and no sleep medication on your own initiative – that belongs with your doctor alone.

Step by step: shifting bedtime in 20-minute increments

This plan takes two weeks and needs nothing but a sheet of paper. It works from about two years of age and solves the majority of cases in which falling asleep takes too long.

Days 1 to 3 – observe only. Change nothing yet. Each evening, note four values in a sleep diary: the time the light goes off, the time the room goes quiet, the wake-up time in the morning and the length of the nap. Work out the average time to fall asleep.

Days 4 to 7 – first step. Move bedtime 20 minutes later; the wake-up time stays the same. The evening routine keeps the same length, it simply starts 20 minutes later. Keep recording.

Days 8 to 11 – second step, if needed. If the time to fall asleep is still over 30 minutes, move bedtime another 20 minutes later. You rarely need more than two lots of 20 minutes; for a kindergarten-age child, a bedtime after 9 pm usually signals that something else is involved.

Days 12 to 14 – back the other way. If your child now falls asleep within 20 minutes, bring bedtime forward in 10-minute steps every three to four days, until the time to fall asleep climbs back to 25 to 30 minutes. You have then found the right window.

Two rules make the difference: keep the wake-up time stable, at the weekend too, with 30 minutes of variation at most. And give every step at least three evenings – the first evening after a change is never representative.

When to look more closely

The plan above works for most families. There are, however, signs that call for a professional opinion. Speak to your paediatrician if falling asleep takes more than an hour for over four weeks despite an adjusted bedtime, if your child describes restless or tingling legs, if they snore at night, breathe through the mouth or have pauses in breathing, if they are noticeably tired, irritable or unable to concentrate during the day, or if the evenings are dominated by strong anxiety. A child health nurse is also a good first port of call for an assessment without time pressure.

And do not forget the other half of the equation: share the evenings out if there are two of you. Sleep habits change over weeks, not nights.

Frequently asked questions about long sleep onset

How long should it take a child to fall asleep?

15 to 30 minutes counts as normal. For school-age children it is often only 10 to 20 minutes. Only if your child regularly needs 30 to 45 minutes or longer over several weeks is it worth taking a closer look at bedtime, the nap and the shape of the day.

My child needs an hour every evening. Is that a sleep disorder?

Not necessarily. An hour of lying awake usually indicates that bedtime sits ahead of natural sleep pressure. Check the clock time, the nap and the last hour before bed first. Only if nothing changes despite those adjustments should you speak to your paediatrician.

Does it help to put my child to bed later?

Usually yes, as long as you do it in small steps. Move bedtime 20 minutes later, keep the wake-up time the same and watch for three to four evenings. A jump of a whole hour at once, by contrast, often causes overtiredness and even longer sleep onset.

Should I scrap the nap if falling asleep takes a long time?

Do not scrap it straight away – shorten it first and move it earlier. A nap of no more than 45 minutes that ends by 2 pm at the latest rarely disturbs the evening. Only if that is not enough does the nap become quiet time with books or an audio story.

How long does a new bedtime take to work?

Give every change three to four evenings before you judge it. The first evening after an adjustment is never representative. Allow two to three weeks for a stable new rhythm, and a little longer if bedtime support has been in place for a long time.

When should we speak to our paediatrician?

If falling asleep takes more than an hour for over four weeks despite an adjusted bedtime, if your child snores, breathes through the mouth or has pauses in breathing, if they complain of tingling legs, or if they are noticeably tired and irritable during the day. Strong anxiety in the evening is also worth discussing.

This article is for general information only and is no substitute for paediatric advice. If problems persist, please contact your paediatrician.