Kelli, welcome. The "minor symptoms" he was having are not minor. They are indications of a failing liver. I don't know how much a "mickey" is, but I suspect he was drinking a lot more than you know.
My best advice is to read posts from others on here going through the same thing. I am just so frustrated at this point with alcoholics who refuse to see a doctor, though they are heading straight for death, that I'm afraid to say much. If he has really stopped drinking, that's great. He can definitely improve if he stays stopped. But I suggest he go to AA and get documentation of his attendance--as that will be required (6 months worth) if he should need a transplant.
Hugs,
Connie