Is there anyway to keep a diaper on? We've tried different types of clothing/sleepers at night and different diapers and cover combos and can't seem to keep our oldest dressed. He is 3.5 yrs old (dev. delayed about a year, and not pt yet). We are working with potty training and he totally understands what the potty is and pee/poop. He can tell me when he has to go and when he has already gone and he just recently doesn't like being dirty or wet and either takes his diaper off himself or asks me to change him. So, is this a huge sign of being ready to learn to use the potty or does he just like being naked and peeing and pooping in his bed? This is so frustrating because I never know what I'm going to find in the morning!