18 month old sleep schedule: what works well?

Q: 18 month old sleep schedule: what works well?

Somewhere between 15 and 23 months, most toddlers land on a single midday nap lasting 1.5–3 hours. A useful rule of thumb puts wake windows at roughly 4.5–5.5 hours right after the switch, then 5–6 hours from 18 months on. The AASM advises 11–14 hours of sleep per 24 hours, and bedtime typically lands between 7 and 8 p.m.

The usual picture between 15 and 23 months

Measure	Typical range
Sleep across 24 hours	11–14 hours (AASM, ages 1–2 years)
Findings from studies of healthy babies	On average, 1–2 year olds slept 12.6 hours, took 1.2 naps a day and woke 0.7 times a night (Galland 2012); among children who napped, naps ran about 2.3 hours (Staton 2020)
Night sleep (typical in practice)	11–12 hours
Naps (typical in practice)	1 nap of 1.5–3 hours, beginning around midday
Wake windows (a rule of thumb rather than a research finding)	4.5–5.5 hours right after the transition; 5–6 hours from roughly 18 months
Night feeds	Most toddlers no longer have any. Your custom plan sets how night feeds are handled, based on your baby’s age.

Where you see AASM, the row reflects the American Academy of Sleep Medicine recommendation, which has AAP support. Galland 2012 rows draw on a systematic review of observational studies. Everything else is a common practice range rather than a research finding. These figures describe an average baby, and plenty of healthy babies fall above or below each one.

Writing out a one-nap schedule takes a minute. The real work is carrying a toddler through the switch and then getting them to bed without an hour of bargaining. Actually Sleeping coaches families with babies and toddlers from newborn on: Dr. Sam writes a plan for your child, limits are firm and kind and explained in words your toddler understands, and you get daily 1:1 check-ins. We don’t use cry it out, and we don’t use wait it out.

Developmental changes happening now

First, the 2-to-1 nap transition, which a large review places mostly between 12 and 18 months. Then there is a burst of language, and the word “no” arrives with it. A strong push for independence runs alongside separation anxiety; the AAP says that anxiety tends to peak between 10 and 18 months and eases over the second half of the second year. Teething continues too, with first molars (about 13–19 months) and canines (about 16–23 months) erupting in this window.

When the average toddler schedule doesn’t match your child

A bumpy nap transition: one day calls for two naps, the next for one. Read nap transitions.
Night waking and bedtime battles near 18 months: read the 18-month sleep regression.
A single nap that runs short: read short naps.
Waking too early: read early morning waking.

Toddlers check whether the rules really hold. Without a consistent response backing it up, a schedule seldom passes that check.

Keeping sleep safe at this age

Set the mattress to its lowest position. According to the AAP, a climbing-out toddler may be ready for a bed, and until one is ready the crib mattress can go on the floor.
Once your toddler reaches 35 inches (89 cm) tall, it is time to leave the crib (AAP, MedlinePlus).

Can you sleep train at this age?

You can, and it isn’t too late. The difference is that toddlers negotiate, so the plan has to rest on limits your child understands and that every caregiver is able to hold. Actually Sleeping has 129 client video reviews and a Feefo rating of 5.0 from 73 verified reviews over the past year, and every plan includes the written guarantee: We guarantee that your baby will sleep 8–12 hours through the night within 14 days of consistent, correct implementation of your sleep plan. Toddler parents share their results in our 12 months and up reviews. Read the best age to sleep train, then book a free consultation with Dr. Sam.

Want your baby sleeping like this?

With Actually Sleeping you get 1:1 coaching: Dr. Sam writes a sleep plan for your baby, we coach you bootcamp-style before the first night, and we check in daily until it is working. We have coached 700+ families, collected 129 video reviews, and put our guarantee in writing: 8–12 hours through the night within 14 days, or a full refund.

Book your free consultation → Hear from families

Common questions

At what point should my toddler go down to one nap?

According to a large review, two-nap days fall off steeply between 12 and 18 months, while fewer than 2.5% of children give up napping entirely before age 2. When your own toddler is ready comes down to how well they cope, and Dr. Sam makes that call alongside you.

How long is a typical nap at 18 months?

Research on 1 to 2 year olds puts the average nap at about 2.3 hours. In practice, a single nap of 1.5–3 hours is common. Your toddler’s plan decides how that nap lines up with bedtime.

What bedtime suits an 18 month old?

The usual rule of thumb is 7 to 8 p.m., moving earlier while the nap transition is underway. Because the best time hinges on your toddler’s nap and how bedtime is going, an Actually Sleeping plan sets it specifically for them.

How long will the 18-month sleep regression last?

Research has not defined a set length. Toddlers push on limits, and responses that vary from night to night tend to drag it out. Getting every caregiver to respond in the same way sits at the heart of an Actually Sleeping plan.