We codies see one glimmer of hope and we want to jump right back in the vortex feet first. He doesn't need an answer now, he needs to get through his recovery stint, then he should go into a sober living home. In the meatime, you need to work on you, and, your codependency issues.
If it were me, I'd get to meetings and read Codependent No More.
What's the rush?