My husband was exactly the same for years.
The turning point was when he blacked out in the front garden and our 10 year old had to help me carry him inside.
I filmed the whole thing and showed it to him the next day. Up until that point, he thought I had been exaggerating everything because he couldn’t remember what had happened.
he started following ‘one year, no beer’. It’s a podcast and a journalling thing where you get a daily email with a pep talk and something to journal about. It really helped him.
another good thing for me was watching some videos by Russel Brand - I know he’s a bit of a knob but he has great insight into how to support people with alcohol and drug problems.
one thing that really stuck with me was this:
”I will help you to change, but I will not help you to stay the same”.
it really helped me to articulate how I felt and it was something that my husband could understand too.
good luck, I know how horrible this situation is.
to give you hope, my husband and I are very happy together and he’s never got black out drunk again. He now drinks in a much more sensible way and we are all much happier.
it can be done but it needs a rock bottom turning point and you need to set your demands and mean them.