When I read your post (and your previous posts) all I see is efforts to CONTROL. You want to 'help' him so he will get better. You want him to hit bottom so he will get better. It seems everything you do has the ulterior motive of controlling him.
You are not that powerful. He is a 52 year old adult, not a child. You have absolutely no control over him or how his life will turn out. Until you accept that, you will continue to struggle.
L