Unfortunately relapse is part of recovery.dont give up on him just yet. Rather, I would tell him he needs to play a more active role in recovery or he's out of the house. Tell him he needs to start going to regular aa or na meetings. Tell him to ask for the sheet that they sign at the end of each meeting proving that they went. After each meeting tell ask him what he got out of that meeting. This will serve several purposes. Firsttly it'll tell you if he's going to the meetings and being active in them. Secondly, talking to someone who cares is very important to someone in recovery. Hope this helps.