DS 10 months old, literally closes his eyes the minute I put him down for his naps and goes to sleep without even a hint of a whimper....but...at bedtime he whinges and whinges, then hollers, then cries and screams until I come back for the umpteenth time and finally rock and jiggle him to sleep. I don't get it. Why are naps not a problem, but bedtimes he needs me to treat him like a 6 week old? Driving me nuts.