My munchkin is about to turn 3 and she generally goes to sleep around 7.30 and will wake up usually between 6.30 and 7. She does on some days have an afternoon nap for between 1 and 2 hours.
I have been waking up earlier all week, so maybe it will just take him a few days/week to sleep later again. Has his behaviour changed at all? If he is a bit mardy i would try putting him to bed earlier to reduce this! x x x