I think its normal hun. Some weeks DS will just say "i cant" (thats his answer when he doesnt want to talk about something) and not answer any questions i ask him about preschool.. some weeks he will. I just put it down to that he must have had a busy day and be tired and doesnt want to talk about it. Fair enough. lol i remember as a kid being asked whats new or what i did today and my answer was always, not much.. even though alot of things happened. Think its just part of being a kid.