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When Do Babies Drop to 1 Nap? Signs Your Toddler Is Ready

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A baby lies awake on a play mat under a wooden play gym while a parent kneels beside them in a sunny nursery.

A toddler who fights the second nap on Monday and desperately needs it on Wednesday makes this a hard call. Toddlers usually move to one nap during their second year, at around 18 months, but age is only a rough guide. Judge it over several ordinary days instead: whether the day still has room for two naps, and whether one nap leaves your toddler settled enough to reach bedtime.

When Do Babies Drop to 1 Nap?

Toddlers usually drop to one nap during their second year. NHS Healthier Together says young toddlers may have two naps a day, and that this usually changes to one nap of 1 to 3 hours as they grow. It says that by around 18 months old, most toddlers have one daytime nap.

Total sleep is the other half of the picture, and the sources give slightly different figures. The NHS website says babies sleep for around 12 to 15 hours in total after their first birthday. NHS Healthier Together and the American Academy of Sleep Medicine give 11 to 14 hours in 24 hours for toddlers aged 1 to 2. Every child is different.

A 17-month-old still on two naps is not behind, and a 13-month-old does not have to drop a nap early. Read age alongside total sleep, mood, appetite, night sleep and your childcare routine.

Five Signs Your Toddler Is Ready for One Nap

1. They refuse the same nap, day after day

One skipped nap means nothing. Look for your toddler fighting the same nap on most ordinary days, with the routine and the timing unchanged.

2. Two naps keep pushing bedtime late

If the only way to fit both naps is to run the second one late, and bedtime then turns into hard work or drifts very late, the day may no longer have room for both.

3. They cope with a longer morning

A wake window is the time your toddler is awake between sleeps. If those stretches are getting longer and your toddler stays reasonably happy and busy through a longer morning, you can usually push the remaining nap later. If they get upset or fall asleep over lunch, they need more time. For how these stretches change with age, see wake windows explained.

4. The remaining nap gets longer

A midday nap that regularly runs long is more likely to cover the afternoon on its own. A nap that stays brief usually leaves too much day after it.

5. One-nap days get easier, not worse

The first attempts are messy. Settling, nap length, mood and bedtime should slowly become more manageable. If they steadily get worse, go back to two naps more often.

When Is Nap Refusal a False Start?

Nap refusal is often a false start when something else in the week has changed. Treat these as false starts rather than a signal to redraw the whole day:

  • One skipped nap after a stimulating morning.
  • Nap refusal during illness, teething, travel, or a new childcare setting.
  • A single good one-nap day after an unusually long night.

Around this age, a run of broken nights and refused naps can also be the 18 month sleep regression rather than a real move to one nap. Toddler sleep varies from day to day. Wait for a stable pattern before you change the schedule.

How to Test a One-Nap Schedule Gradually

Move the first nap later in small steps and let your toddler's response set the pace.

  1. Move the first nap later by 10 to 15 minutes every few days.
  2. Keep the morning active but not frantic, offer the meals and milk that suit your child, and use the same short wind-down.
  3. After a short nap, move bedtime earlier or add a short rescue nap to bridge the gap, rather than holding out for the old bedtime.
  4. Allow mixed schedules while the change settles. A one-nap day after a strong night and a two-nap day after a 5 a.m. wake can both be reasonable.
  5. Track at least a week of nap start, nap end, bedtime settling, overnight changes, and morning wake.

A note like “happy afternoon” or “fell asleep in high chair” tells you more than the nap length alone. For the full step-by-step plan, including what to do on the bad days, see the 2 to 1 nap transition guide.

One Nap or a Quiet Rest?

Both, at different stages. Early in the change, keep offering a real chance to nap. Later, when your toddler no longer sleeps at that time, some families keep a predictable quiet period in the middle of the day.

Do not leave a distressed child alone simply to preserve “rest time.” Choose an approach that fits the child's development and your family's responsive care.

When to Ask for Help

Contact a health visitor or GP when a sudden sleep change comes with breathing problems, loud persistent snoring, pain, unusual movements, feeding difficulty, poor growth, or a child who seems unwell. Also ask for support when sleep deprivation is affecting caregiver safety or mental health.

How Wake Wise Helps You Spot the Pattern

When the days blur together, Wake Wise records what the naps actually did, so you can judge a real week instead of reconstructing it from memory. The app cannot tell you whether your toddler is developmentally ready for one nap. Wake Wise Pro gives a next-sleep estimate from the wake-window method you choose, so treat it as a rough guide and make the decision from the timeline and your child's response.

Sources and Related Reading

This article is general information, not medical advice. Sleep needs vary. Speak to a qualified health professional about concerns involving breathing, feeding, growth, pain, development, or persistent sleep disruption.