Alcoholic? Husband stuck in "college/party mode"

I love my husband but I'm concerned. He's always been the party guy, drinking on weekends when we were in college years ago. But now were older, own a business together and have a kid and I feel like he hasn't changed. He can't just have a beer, it's a 6 pack. Or a glass of wine, it's the whole bottle. Or whatever it takes to get buzzed or drunk. This happens nearly everyday. He says he's just having fun but I don't think that's normal? The part that frustrates me the most too is that every single day he wants me to join him in drinking like "the old days" and gets upset and calls me names (like I'm no fun, lame, boring) if I don't. But I've grow up. I'm not sure where to start with him.