How Much Is Too Much?

My husband was diagnosed with alcoholic fatty liver disease. This scares me a lot. I have sometimes wondered if he drank too much but he seems to keep it control. He has a couple of beers and about a half a bottle of wine most days so he is not drinking in overly excessive amounts. He says his doctor did not tell him that he had to quit drinking. I am surprised about this and this is what I want to ask you about. He says that if he loses 20 pounds his liver problems will go away and he does not have to quit drinking so long as he reduces his weight. He says this is what his doctor recommended to him. Something seems fishy to me. I think he was probably told he had to quit drinking and he doesn’t want to, or maybe he can’t. What do you think?