No More Nap Time?

For the past couple of weeks I've noticed that it's taking Luke a looooong time to fall asleep at nap time.  He sings, rolls around, throws everything out of his crib, plays music, practices yoga moves and does just about everything he can to keep himself occupied.  For the past two days he's taken his pants AND diaper off (today when I went up to put it back on he told me he peed all over his blankets...and sure enough, he had!) and right now I'm watching him do forward rolls from one end of his bed to the other.  I'm not sure I'm ready to give up my beloved nap time just yet...especially because Cade still naps very well every day.  My fingers are crossed that it's just a phase!