crystal,
I am sorry that you are having such a tough time hon. I can just imagine how tired and worried and disappointed you are, that he cant slow down, or even be honest. It looks like he is getting more than three beers, one way or another. As Suki mentioned, you cant expect someone who most likely has a drinking problem to slow down. He may be an alcoholic, and needs to want to stop, if he is gonna.
What you can do, and it will help you more than you know, is to find an al-anon meeting. for family of alcoholics. it will help you to survive,and to figure out just what you can do for you. As you probably know, no one can make an alcoholic stop drinking. and you need to take care of yourself. you will find the way to live your life, in the best way possible, while you decide what you must do for you. Sometimes, it helps us to deal with the drinker, in a way that has the most success, in allowing them to see their need to quit.
you need some peace, you are going to school, and you have children. you have many things that you need to be able to focus on. take the focus off of him and put it on yourself. stay here, and learn good things. find a meeting, it will be a life line for you.
It will bring you peace. you need to take care of you. to eat, to rest, to laugh with your children. if you stop fighting with the drinker,they cant blame you. but you can have your boundaries, of what you will accept in your life. when you pull away from trying to control the drinker, it gives you peace.
you found a great place. there is much experience here, and you will get help here.
hugs
annette