Does anyone have any advice? He is a very, very deep sleeper, shouts and gets upset if we wake him to take him for a wee in the night and then is grumpy in the morning. He will wear Dry Nites but has a overnight residential trip with school in March which he is determinded to go on and doesn't want the others to see his "nappy". He is dry in the day but doesn't have any bladder control once he's asleep at all. I really don't know where to start.