hmmm....how old is he now? 1 hr 10 for a nap doesn't seem unusually short, but his night sure does. When he wakes at 5:30 - is he happy and ready to go or is he crying? Do you think the 5:30 could be habitual? Average length of naps for a 2 year old is 1.5 hrs, at 3, it drops to 1.25 hrs. The nights for a 2 yo average 11 - 11.5, and that drops to 10.75 at 3, so I'm not sure he's OT.