I don't know how old your son is and how many naps he takes, but what I have always done when nap schedules get messed up is put them to bed extra early. Like an hour or more early depending on how much napping he normally does. When my 16mo old has a very short nap (he just went from 2 to 1 nap, so he is really tired from a short nap) he goes down 30 min early. When my 2.5 year old does not nap at all, she goes to bed 1.5 hours early (and falls asleep right away unless she is extremely tired and then its harder for her to fall asleep).
at 4:05 PM on Feb. 11, 2011