Him announcing he has a problem with alcohol and actually doing something about it are two very different things.
He’s already stated AA is not for him or groups so he’s kind of already limiting himself or coming up with excuses for why he can’t…..
I think the suggestion of al-anon for you will be a tremendous help to you. Also read as much as you can here (the stickies at the top) and research alcoholism and addiction, learn as much as you can about it. The more information you have the better you are prepared to make decisions that affect YOUR life.