Preaching to the choir. I’ve been sober for years at this point and had a poly substance abuse issue but alcohol was always one that would always come back around in my life. It’s literally everywhere and YOU’RE the weird one if you don’t drink. Alcohol is a literal poison and it’s so in your face no matter what you do. Things that helped me were friends and family (sounds like you’re a good friend, I don’t know you but I’m proud of you for leading the charge on trying to get your friend help), naltrexone, and completely removing myself from situations where alcohol was present, and leaving behind people that didn’t respect my sobriety.

It was a lot of hard work, I fucked up a few times. Just be there for your buddy, it sounds like you already are but yeah. Come from a place of concern, ask them if they’re concerned about their own drinking and figure out what’s goin’ on. Also, don’t be offended if you get told to fuck off this first go around. If he’s not ready and is still in denial, you will not change his mind and you will be setting everyone up for failure here. If he’s not ready for the help, there’s nothing you can do other than express your concern about alcoholism, his physical and mental health and let it stew. You may find that he chooses alcohol over his relationships at this stage in his addiction. If he wants to come forward and get help, then that’s great.