OP, I hope you are sleeping.
You are getting a lot of sage advice to leave him and that's incredibly huge for you to take on.
My friend is a HCP. She lived away from where she grew up with her husband and their children. Husband is an alcoholic. Hard core. There was a breakdown, drinking in the office for two weeks, locking himself in. He was, I believe, sectioned.
When social services arrived at her office she was absolutely mortified. She sold
Her share in her practice and took the children 'back home'. Closer to friends and family.
He was left to get on with it himself. And he did. That man loves nothing more in this world than those children.
He hasn't touched a drop since. 2 years now.
Now that he realised the stakes, he really pulled it together.
He moved closer to her, renting his own house. And now they have moved back in together and it's working out.
He is ever vigilant but has done this alone, no counselling or AA. He's very old school upper class English!
My point is that leaving him doesn't have to be the end. It can be the beginning.
Really big hugs to you and the best of luck to you all x x