How do I help him transition to one nap per day?
Little ones transition from taking two naps to one nap per day by about 18-months-old. The easiest way to do that is to slowly move the morning nap a bit later every few days until he is napping at about 1:00 p.m. You will also notice that the although he is probably napping once per day, it probably is a bit longer than his morning nap used to be.
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