Hey Zeppelin, I second Lexicat's suggestion of leaving his recovery to him and the professionals. I know this is really difficult to do specially if you have been trying hard for a long time to save this guy.
As well as educating yourself on alcoholism, keep learning about codependency. If you are truly codependent then you will find it super difficult to let go of worrying about him and even more difficult to look at your own problems.
Keep posting and let us know how things are going.