The three C's:
You didn't Cause it
You can't Control it
You can't Cure it
The truth of the matter is that an alcoholic will not stop drinking until the alcoholic decides they have had enough. It is a difficult process for them, and they won't stick with it unless their heart is behind it for themselves. Most of them have to hit some sort of "bottom" before they seek help, and it's clear that for your A going to the hospital wasn't even his "bottom" yet.
There is nothing you can do for him, you need to take care of yourself and your lovely daughter. He has his own life, and his own decisions to make, it it's clear that he's choosing in favor of the alcohol.
(((HUGS)))
It's not easy. That's why all of us are here in this forum, because it is difficult to let go and let someone you love fall. But if they do not fall, how can they decide to pick themselves back up?