((debpug))
This may sound crazy but the only way to help him is to get help for yourself. Attending meetings, reading recovery literature, posting here on SR and reaching out for help for others who have walked this same path can help you learn what is best for you in this situation.
I'm glad you have taken the first step to post and reach out for help. I know how scary it can be - I have several alcoholics/addicts in my life but I have learned thru Al-Anon and other recovery support tools to take care of me and let them walk their own path.
Don't give up before the miracles happen in You - You deserve them.
Wishing you Serenity & Joy,
Rita