And while I hate to ever disagree with Jeff, I have to now.
My mom was an alcoholic, so I know something about it. Please do not let your son think it is ok to drink in your home. If you feel strongly against it, letting him do it in your home is sending the wrong message. It is illegal. He will think it is ok by you to break the law when it is convenient.
There is a strong genetic link in your family for alcoholism. There is some likelihood that he could be genetically predisposed to substance dependency.
It is imperative that you set clear boundaries for him, that you let him know how you feel about his alcohol and drug use and that he continue in therapy. Hopefully, these things will help him find his way.
It is great that SS16 has his back. Keep the line of communication open, let him know you are there for him.
