My son is 2 yrs 2 mos old and he's gone in the potty a couple of times but generally expresses no interest. I know he's young so I haven't been worried about it, but I've noticed that a lot of kids his age are already trained...or are on their way to being trained. Am I supposed to be 'doing' something about it or do I just wait until he seems interested. If I ask if he needs to go potty even when he's pooping in his diaper he always says "no". I've tried letting him go diaperless but he just goes on the floor and screams when I carry him over to the potty afterwards. Any tips?