Hello and Welcome to SR.
I normally come into these Alcoholic BF/GF threads with a quick, Run and don't look back response.
While I'm always sad to see another post of this type, I am never surprised and thankful that you found us. We certainly understand your scenario. We've either been there done that, currently doing it or about to do the same thing.
There are a few things I've learned. They may or may not apply to you.
I've learned to put more energy into myself and making sure that I'm clear, level headed and as healthy as I can be. This is done for me so I can do it for my 20 month old son.
The other thing I've learned and practice as much as I can are the 3 Cs.
You did not Cause it.
You can not Control it.
You can not Cure it.
Lastly, there are a few sticky topics at the top of this forum. They provide some extraordinary insight and I believe they're a great read.
You've found an excellent resource here. Keep on writing and reading. It really does help.