My 17 mo ds has had a pretty regular routine for a few months now - 2-2 1/2 hour nap between 10:30 and 11:30AM and then sleep at 7PM with actual sleep by 7:30-7:45 at the latest. Yesterday and today have been different.....he has stayed up later during the day and wakes up now between 2-2:30PM, but them is still showing signs of being tired and ready for his normal routine by 7PM. Then, when I went to check in on him at 8 or 8:30 last night and tonight, he is laying in his crib quiet, but totally awake. Tonight the poor kid cried because I walked in, but only for 3 or 4 minutes before quieting down again.
Is this normal and should I do anything?