I will give you some advice as you seem desperate. One thing that will make a big difference is if you have noise maker door that will sound when someone opens doors to go outside. It will alert you that your son is trying to leave the home. It is like having a bell on a door but this method I am speaking on is electronic. Your son is bored in the home and that is why he is wandering besides his condition. He needs to be engaged in something at the house. I think it will get better but you will have to create some more structure for him.