call your mental health dept.they have ways to get him in a treatment program with no cost to you or the family.if he is using they can help.loves is right, if he does not want the treatment it may not help but with my grandson it is a chance they could say something that will hit a nerve with him & i9t is worth a try. you are such a great young man.just remember it is not your fault.the 3 c's in our program is 1- i did not CAUSE it, 2-i can not CONTROL it 3-i can not CURE it.do what you can do & let it go.prayers,hope