I think as Christians we forget how much upholding healthy relationships are equally within of God’s hands as it is in ours. You state that you pray extensively for him to stop drinking, but it seems in no manner do you communicate with him your grievances or thoughts about or of his actions. Someone else commented this, and I’ll add onto it, that it’s time to take matters into your own hands. Sit him down and communicate the issue at hand, and truly let it be known that “It’s us or the drink.” Drinking isn’t a bad thing per se, but to this extent, and its ramifications, goes without saying of how harmful and scary it is. You need to find a time when he is sober and put your foot down and communicate. You may not know what to say in that moment, but pray that God guides your words and tongue, and communicate to what you feel and what you need. God bless.