How many hours of sleep do your preschoolers get? My nephews nap a lot during the day and have not much sleep overnight. Any ideas on how they can stop napping so that they have a good night's sleep?

My daugther stopped afternoon naps since she is 4 years old. Try to occupy him with some activities so he can stay awake. If he is waking up too early and thus need to nap, try to adjust his bedtime to a later time so he will wake up later. It takes time to adjust the sleeping schedule and body clock, do it consistently and you will be able to see the results in at least 2 weeks.