Now, several times a week, my son (who will be 2 in two weeks) fights his one nap.

He sleeps roughly 11 hours at night and wakes at 6:30/7 and nap is always at 1 (in his crib around 12:30/12:45). His one nap is only 1.5 hours and it's been this way since we went down to one nap. Occasionally he will sleep 2 hours. He always takes 20-30 mins to fall asleep usually happily plays and then conks out. On the days he fights the nap, he plays for 45 mins to an hour and then gets annoyed and yells that he needs something from me. He'll toss his lovies and pillow out of the crib, take off his pants, etc. Then get angry and cry for awhile. The other day I left him in his crib 2 hours (with one check) and he didn't fall asleep. But then the second we left the house he fell asleep in the stroller. Today he's been in there 1.5 hours and there's no sign he is taking a nap.

Should I just start putting him down later? Please tell me he is not trying to get rid of his already short nap?