I'm so lucky. Alcohol has played such a painful part in our marriage that he decided to quit with me. I've relapsed several times but he hasn't. Only problem is codependence. He had an alarm set yesterday to talk to me about alcohol but i'd already beat him to the punch!
My suggestion is to go on a nice walk or do something soothing and a situation where alcohol will be the furthest thing from his mind and tell him that you're feeling like you two have been having trouble communicating and that you really feel that both of you would benifit from a session or two of couples counseling just to learn better skills. You can both work out any hidden frustrations with a neutral third party. Let him know he doesn't have to commit to lots of sessions but a couple couldn't hurt (so he doesn't feel backed into a corner). Sorry i'm long winded but I hope it gives you a viable option.