The shift from two naps to one is one of the biggest sleep transitions of the toddler years. Here's how to know when your child is ready, and how to make it as smooth as possible. 

If your toddler has suddenly started fighting one of their naps, or bedtime has turned into a battle, you might be wondering whether it's time to drop down to one nap. This is one of the most common questions I get from parents of toddlers aged roughly 12 to 18 months, and the answer isn't always straightforward. Some toddlers are ready earlier. Some aren't ready until closer to 18 months. And some will tease you by refusing a nap one day and then desperately needing it the next.

The key is knowing the difference between a phase and a genuine readiness to transition.

Signs your toddler might be ready

The most reliable sign is that your toddler is consistently taking a long time to fall asleep for one of their naps (usually the morning nap), or they're napping well during the day but bedtime is pushing later and later. If this pattern holds for two to three weeks, it's often a sign that they don't need as much daytime sleep as they used to, and it's time to consolidate into one longer midday nap.

Other signs include: your toddler skipping one nap entirely but still being happy and coping well, or your toddler napping well for one nap but then refusing the second one altogether. The important thing is consistency. A few off days doesn't mean they're ready to drop a nap. Illness, teething, a developmental leap, or a change in routine can all temporarily disrupt naps without it meaning the schedule needs to change permanently.

How to make the transition

The smoothest way to drop to one nap is gradually. Rather than cutting the morning nap cold turkey, try pushing it later by 15 to 30 minutes every few days until it sits closer to midday. This gives your toddler's body clock time to adjust without becoming overtired. During the transition, you might find that your toddler needs a slightly earlier bedtime to compensate for the lost sleep. That's completely normal and usually temporary.

Expect some rocky days. The transition period can take anywhere from a few days to a few weeks, and there will likely be days where your toddler seems exhausted by 10am and other days where they sail through to lunchtime. Be flexible. If they clearly need a short morning nap on a given day, let them have it. Rigidity doesn't help here.

Getting it right with support

If you're finding nap transitions confusing or your toddler's naps have always been a struggle, the Nap So Simple guide covers all of the major nap transitions in detail, including when to drop from three naps to two, two naps to one, and eventually when to drop the nap altogether. It also covers short naps, nap resistance, overtiredness, and how to support naps at daycare. It's a practical, gentle resource that takes the guesswork out of daytime sleep.

Nap transitions can feel unsettling, but they're a sign that your toddler is growing. And like every other phase, this one passes too.