I'm not sure you are yet at the stage you need AA (others might tell you differently) unless you feel compelled to have those drinking sessions, that your week wouldn't be right without them. I suppose it all depends on how much you feel you need to sit down and drink the alcohol.
From my standpoint you're in a good zone now to knock it on the head before it gets worse. I don't think age has anything to do with it. If its progressing, albeit slowly, then it will prgress more.