Two naps to one: the hardest transition

Somewhere between eleven and fifteen months, both naps stop working and there is no arrangement of the day that fixes it. This is the longest and most uncomfortable nap transition, and the way through it is a bridge rather than a switch.

4 min read

On two naps, your baby needs three wake windows in a day. On one, they need two. The trouble is that the windows required for a single nap - often four to five hours either side - are longer than they can comfortably manage at the point their body starts asking for the change. So for several weeks, two naps is too much sleep and one nap is not enough.

That is why this transition takes four to eight weeks rather than a few days, and why trying to complete it in a week produces an exhausted toddler and a fortnight of 5am starts.

Signs it is actually starting

The bridge

Push the morning nap later in fifteen-minute steps, every three or four days, aiming eventually for a single nap starting somewhere between 11:30 and 12:30. Do not attempt to jump straight there. Each step lets the body clock catch up, and the steps are the whole method.

While you are doing this, run a mixed schedule and stop apologising for it. Some days will be one-nap days, some will still need two, and a good rule is that if the single nap ends before about 2pm, offer a short second one. Alternating is not inconsistency here; it is following the day you actually got.

And use early bedtime as the safety net throughout. On one-nap days, bedtime may need to be an hour earlier than usual, sometimes more. This is temporary and it prevents the overtiredness that otherwise derails the whole transition.

For a month, the schedule is whichever one today needs. That isn’t inconsistency - it’s the bridge.

What the finished version looks like

A single nap of an hour and a half to two and a half hours, starting around midday, with bedtime settling back to its usual time. Most children arrive there between fourteen and eighteen months, and a nap that short at the beginning - forty-five minutes - usually lengthens over several weeks as the body adjusts.

Expect regressions during teeth, illness and holidays. Going back to two naps for a week does not undo anything. The transition finishes when it finishes, and the date has almost no bearing on anything.

The signs you have moved too fast

Watch for early morning waking, night waking that was not there before, and a child who is falling apart before lunch. Any of those appearing a week into the transition means the windows have run ahead of what they can manage, and the answer is to step back rather than press on.

Stepping back means offering the second nap again for a week and moving the morning nap back by fifteen minutes. This is not starting over - the body clock keeps most of the shift it has already made, and the next attempt usually goes faster. The whole transition is a negotiation between what their body is asking for and what it can currently sustain, and it is normal to overshoot once.

What the single nap should look like at the end

Starting somewhere between half past eleven and half past twelve, running an hour and a half to two and a half hours, with roughly equal wake windows either side. That is the destination, and it is worth knowing so you can tell how far along you are.

A nap that starts at ten and finishes at eleven is not yet a single-nap schedule - it is a morning nap with nothing after it, and it will produce a six-hour afternoon that nobody can survive. If that is where you are, the answer is to keep pushing the start later in fifteen-minute steps rather than to accept it as the new arrangement.

When to stop troubleshooting

A child under about ten months who appears to be dropping to one nap is worth a mention to your health visitor - that is early, and is more often a sign of something else. So is persistent exhaustion regardless of schedule, or nap refusal alongside illness, fever or a change in appetite.

General guidance, not medical advice. Your paediatrician's advice takes precedence.