The 2 to 1 Nap Transition

Two naps usually become one somewhere around thirteen to eighteen months, and this is the most disruptive of the three transitions — the day loses a whole sleep at an age when the child has opinions about it. The reliable sign is time: the morning nap refused, or fought, or cut to nothing for two weeks or more. One bad week is a bad week. The most common mistake in this whole subject is doing it at twelve months, and the most useful tool while you do it is an early bedtime.

Most toddlers spend weeks genuinely needing two naps on some days and only wanting one on others, which is exactly as confusing as it sounds. That stretch is the transition; it is not a sign that you are doing it wrong.

The twelve-month false alarm

A one-year-old who suddenly refuses the morning nap is usually not finished with it. This is the single most common early drop, and it happens because the refusal is so convincing: she lies in the cot chatting for forty minutes, or screams, or plays, and the obvious conclusion is that she no longer needs it.

Look at what else is going on at eleven to thirteen months. The American Academy of Pediatrics puts pulling to standing and the run-up to walking in this window, and says most babies say at least one word by the first birthday. A toddler who has just learned to stand up will stand up in a cot, in the dark, and then be unable to work out how to get down again. Sleep commonly comes apart for a fortnight around all of that, and it looks precisely like a nap being outgrown. Our page on the twelve-month stretch covers what is published about it.

The cost of getting this wrong is not permanent, but it is real: a toddler on one nap at twelve months is short of daytime sleep by an hour or more, arrives at bedtime past settling, wakes early and is less able to manage the longer day the next morning — which reads as proof that everything is broken and is really proof that it was too soon. If that is the fortnight you are in, put the second nap back. That is allowed, and trying again in a month usually works.

The arithmetic, and the bands either side

At eleven to twelve months most babies manage three to four hours awake between sleeps; at thirteen to seventeen months, three and a half to four and a half; at eighteen to twenty-three months, four to five and a half. From the first birthday the published total is 11 to 14 hours of sleep in every 24, naps counted in that total — a range from the American Academy of Sleep Medicine's consensus statement, which the AAP endorses.

Those bands are compiled rather than quoted, because no publisher this site may cite prints a nap-transition schedule. The wake windows by age page shows the working, and the wake window calculator reads the same bands off an age.

Here is why the day breaks. Two naps and a four-hour band means a day of roughly fourteen hours awake spread across three stretches, and the morning nap ends up starting ninety minutes after breakfast — too early to be wanted. One nap and the same band means a day with a single long sleep in the middle, and an afternoon stretch that is longer than anything she has done before. Neither works cleanly for several weeks, and that is the whole problem.

How to make the move: fifteen minutes at a time

Push the morning nap later rather than cutting it out. Fifteen minutes every three or four days, until it lands somewhere in the middle of the day — usually late morning to start with, drifting towards the early afternoon as the weeks pass.

1. Move the morning nap fifteen minutes later and hold it there for three or four days.
2. When it lands near the middle of the day, let it run longer than the old morning nap did. A single nap that starts short is normal; most stretch out over a few weeks.
3. Bring bedtime forward while the afternoon is still too long — often to half past six for a fortnight. This is the shock absorber for the whole transition.
4. On the days it obviously is not working, give a second short sleep late in the afternoon and cap it. A two-nap day in the middle of this is not a step backwards.

That sequence is craft rather than evidence — no publisher this site may cite prints it — but it is the shape that works most often. The sleep schedule generator will draw both versions of the day from the same age, as windows rather than clock times.

Cold turkey, or alternating days

Alternating is what most families actually do, and it is not inconsistency — it is reading the day you got. A late waking, a bad night or a long walk in the pram changes what the child can manage that afternoon, and keeping both days available means you are never trapped.

Cutting straight to one nap can work when the morning nap has already stopped happening on its own for a fortnight. Doing it deliberately while she still falls asleep for it usually buys a couple of weeks of five o'clock wake-ups. If you want a rule, it is this: change the timing first and the number of naps second.

Overtired, early waking and night waking

All three arrive during this transition and all three have the same first answer, which is bedtime.

Overtired. A toddler who has gone too long is wired rather than sleepy: fast, loud, clumsy, then furious. Bedtime that follows is a fight and the sleep that follows is broken. The response is not a longer day but a shorter one — an earlier nap tomorrow and an earlier bedtime tonight.

Early waking. Nearly always an over-long final stretch. Pushing bedtime later to buy a later morning reliably produces an earlier morning. Move bedtime forward by fifteen minutes, give it four or five days, and move it again if it helps.

Night waking. If the naps are broadly fine and the nights are the only casualty, this may not be about naps at all. Separation anxiety runs from the second half of the first year until somewhere near the second birthday, and the AAP describes it causing many nights of disrupted sleep over several months. The nap transition checker weighs those two explanations against each other, and the eighteen-month page covers the other fortnight that lands inside this band.

The daycare problem

Plenty of nurseries run one nap for the whole room, at a fixed hour, because that is the only way to staff a room. If your child is still genuinely on two naps, she will be short — and no amount of asking usually changes the room's timetable.

The honest version of what you can do about it:

• Ask what actually happens rather than what the timetable says. When did she go down, how long did she sleep, did she settle. A nursery day sheet is real data and it is free.
• Accept a mismatch on nursery days and run your own shape at the weekend. Two different days in one week is not confusing to a toddler; being exhausted is.
• Use bedtime. On nursery days, bring it forward by thirty to sixty minutes for as long as it takes. This is the single most effective thing available to you and it costs nothing.
• Give it a few weeks. Most children adapt to the room's single nap faster than their parents expect, usually by lengthening it.

If she is falling apart every nursery afternoon a month later, that is worth raising with the room leader — not as a schedule request but as a question about whether she can go down earlier than the others.

How long, and what it should feel like

Weeks rather than days. Nobody publishes a number because nobody has measured one. What is reasonable to expect is a fortnight of alternating days, a stretch of very early bedtimes, a single nap that starts short and lengthens, and a settled one-nap day somewhere after that. Language usually arrives in a rush during the same months — the AAP has toddlers learning about one new word each week between eighteen months and two years — which is its own reason for a few loud nights.

Safe sleep does not change because the day did: on her back, on a firm flat surface, in a cot clear of blankets, pillows, bumpers and soft toys. A child who can climb out of the cot has told you it is time for a bed, and the room then has to be safe for someone who can get out of it.

The transitions on either side of it

Before it comes three naps down to two, around six to nine months. After it, the last one goes — when toddlers stop napping is anywhere from about two and a half to past four, and the range is genuinely that wide. The by-month detail sits on nine to twelve months and the toddler page.

None of this is medical advice and no page can see your child. If the worry is feeding, growth, a child who cannot be settled at all or anything that simply frightens you, that is a conversation with your pediatrician or health visitor rather than a nap question.