Don't hesitate to call a Dr. in the event of problems. Also, I would get him to an AA meeting pronto. I am sure you are a loving and supportive mother, but right now he needs to find peers that have been gone through what he has. Hard for me to imagine that "locked in a motel room with mom" is going last very long as a recovery plan. For me, my mom thought she caused my alcoholism/addictions, so she wanted to fix them. Her heart was in the right place, but the truth is that she didn't and she couldn't.