As with the others, unfortunately, there isn't a damn thing you can do.
I tried just about all the things on your list. (Well, most of them.) I'd be willing to bet that most everyone here has. They don't work. While a non-addict sees the rationale, the addict won't. So don't waste your time and energy.
Pull up a chair and stay awhile. Read, and learn, and welcome to our sad fellowship. (Well, only sad for some. I left my alcoholic husband, and life is SO much better for me.)
Good luck
D