Welcome to SoberRecovery, there are many here who share your pain.
Sadly, there is not much you can do to stop his drinking, an alcoholic will always find their next drink.
Have you tried any meetings at Al-anon? That is a 12-step program for those whose lives have been affected by the drinking of another. Many here have found a better way of living through that program, regardless of how their alcoholic is doing.
There is a forum here called Friends and Family of Alcoholics, and many there have shared what works for them. When you feel comfortable, maybe visit a few forums down and take a read, joining in if you want.
My heart goes out to you, that's just no way to live.
Hugs