Hi. My GSD Puppy is 9 weeks old. I built him a doghouse in the backyard with his food, water etc. That is also where he goes to potty(If I take him there). The problem is he sleeps in my room at night and he has free access to the backyard as there is a security gate for him to go through but someone cant get in. The problem is he does his business in the house but when I am with him in that area he goes outside to do it. How can I teach him to go out at night by himself or is this typical puppy behavior? I am a really heavy sleeper so I won't wake up if he tries to get my attention etc.