My three year old has finally mastered potty training! He has been peeing in the potty for the last year, but the pooping has been a lot slower. But the last two weeks, at least, he has gone pooping on the potty all by himself, no accidents, so I think it's safe to say he has it figured it out by now! So now I'm wondering when should I start putting him in underwear? He has been pantless for the whole potty training process. Also, he has a disability, so he can't undress himself yet, and he is speech delayed so I'm not sure he would be able to tell me he needed to go. Any advice?