One thing he is going to do is make it out like you need to 'fix it'...drive him around, take care of him, make him all better...including covering up for him to your child.
You can't do that. Not if you want to be healthy.
What you can do is ....let him make his own choices. Let him figure out how to get around. Tell your child the truth.
You can't save him. You CAN save yourself ...and your son from his antics.
He will fuss, cry and beg.
He will convince you it's all your fault that he drinks/drank.
and
my favorite.... he will promise you the moon and the sun. He'll say I won't ever drink again. he will beg you not to tell...keep his secrets. ..
and maybe you will...
but remember with every secret you get sicker. You begin to take on a caretaker role of mothering him.
It is not our place to do that.
and when he says your not being supportive...
well here's my standard answer...
"i'm still here aren't I? and you better get on your knees and thank God I am...because I don't HAVE to be. I CHOSE to be. That's all you get from me for now"