How do I remind him what it felt like?????
It depends why you are reminding him.
If it is because you feel bad for him, then tell him that.
But if it is because you don’t like him drinking, I don’t think you should mention that he doesn’t like being sick.
I think it is important to be level with people when trying to convince them to do something. If you really don’t like it yourself, you shouldn’t pretend that you are motivated only by concern for him. You should tell him it bothers you.
Otherwise, you will be annoyed at him for drinking, when you have not even told him it bothers you.