How long has he been rejecting his nap (I assume he's taking one nap not two)? About 2 months ago my son also started fighting his nap like crazy. He really needed it, but would just bounce around his crib babbling and whining. I found 2 things worked:
1) I could still rock him to sleep. This was an emergency tactic only. He's usually good about falling asleep unaided and I didn't want to un-do all that progress. BUT I also knew that when he's really sleep deprived, he doesn't sleep as well at night or during naps. Counter-intuitive, I know, but true.
2) Give it time. Just keep the routine going and insist on naps or at least quiet time. I'm still not sure what threw him off, but after a few weeks, he just started taking naps again. Guess I'll never know what happened, but at least he's napping again.
at 8:57 PM on Mar. 4, 2011