How do i talk to my friend about being an alcoholic?

I have been friends with my dude for 10 years now. We worked at the same pizza place and hung out after like 2 days of knowing each other. We would do the normal early 20s stuff like smoke drink and paly videogames.

After about 5 years i noticed that he was having a “breakfast beer” every morning before we would go to work. Our jobs were not demanding at all and i just shrugged it off.

Mind you he has always been a drinker. He will drink anything hw switches from beer to vodka alot but its not even good vodka its the cheapo kumchakta plastic bottle crap, and it would be gone by the end of the night. I always make the joke “he’d drink piss if it had enough of an alcohol content in it.

Well now he lives with another friend and its a house with just dudes, but the other guys are like late 40s early 50s. He never contacts me and he spends all the time in his room. Works 3rd shift at a gas station doesnt drive anywhere. He has admitted to me that he will steal beers from work and they’ll just chalk it up to customer theft.

I’ve talked to him about maybe going to therapy but he just laughs it off and now isnt even talking to me. His mother textes me a few times a year asking how he’s doing bc he wont talk to her. I dont have the heart to tell her that he has alot of issues. Is there any advice to help me get through to him?