This from @Topseyt totally hits the nail on the head, for better or worse:
"He needs to recognise that there is a problem and want to tackle it. Otherwise, pretty much nothing will change."
I was an alcoholic for the best part of fifteen years. I can only speak from my own experience, but, for me, no one, no matter how influential or important in my life, convinced me to stop drinking. I had to recognise the problem and then act on that recognition in order to address it. In fact, as odd as this sounds, sometimes a “bad” example can be more beneficial than a “good” one. In my case, a dear, dear friend of mine who was a senior sound supervisor at the BBC frittered his life away through alcohol and died in his early sixties from an oesophageal varices (a common cause of alcoholism related death). It was only after his death that, by degrees, I realised that if I didn’t change I would end up going down the same path as my dear friend.
For myself, even the best-intentioned words from family and friends were misinterpreted as interference, controlling behaviour and nagging. Now I can see that it was simply concern they were expressing, but at the time I hated it and it actually made the problem worse. It made me behave secretively and instead of drinking openly, to avoid the recriminating voices of others I drank furtively and behind people’s backs.
Also, whilst the OP seems to be approaching this difficult situation thoughtfully, in that the OP isn’t asking for her husband to totally quit, conquering alcoholism looks different for different people. Some people have to stop drinking all alcohol forever, some people have to rein it in firmly and be very mindful during times where alcohol is around. Perhaps it’s worth the OP considering how a “better” and non-addicted version of her partner would “look”. This, in my view, actually matters because if her vision of sobriety is a million miles away from what her husband think he might be capable of, then there are likely to be real problems and differences in approach. In my own case, my partner never expected me to become tee-total. He just wanted it to be “normalised” - which is what I achieved eventually.
Really, the best advice I can give is, outside of a time where there is alcohol around, talk to him calmly about your reality and how you see his drinking. But I’d suggest just talking and not saying “I want you to stop” or “you must get help”. At least in the first instance or two of discussion. Sew the seeds and allow him to go away and think about it. Very often, a heartfelt admission of worry and concern without expectation or admonishment can go a very long way. I’m lucky enough to say this has happened with my own partner. He’s never said “I must stop… or else”, but rather that I simply wasn’t functioning with the best version of myself and he put enough blind faith in me to see there was potential for change. Of course, we’re all different, and I don’t know what the unique dynamics between you and your husband are. Of course, if something goes on and it stays the same or gets worse, you have every right to then begin pointing up consequences. But sometimes it isn’t necessary to crack a nut with a sledgehammer. Showing someone you have faith they can get better is at least as powerful as a threat.
Anyway, I wish you both the best of luck and really hope you can find a way forward through this difficult situation.