no nice talk from me. You are facilitating your wife's child abuse, and if the local child protective services gets wind of this, they could take you child away and charge you. go back and read what you posted. It is that bad.
Read the stories here. your wife is sick. She will not get better any time soon. She lies. She manipulates. You make excuses. You hide behind your love for her.
You need to leave her now, take your child, and get her locked up for the safety of the unborn. Do some research on excessive alcohol consumption and the harm to the fetus. All it takes is once.
If all this rattles her cage enough bring about a self actioned change, then afterwards, you may have a chance at a life together. 99.9% sure she will not change anytime soon without something like this forcing her to take a look at what is going on.
Next, you need to get smart on child custody laws. The days of mothers like you describe keeping their kids are over. You will need some evidence, like pictures and or recordings. but there is alreayd a paper trail.
Go see a lawyer. today. right now. I'll send you 100 bucks for the consult. The lawyer can file a restraining order prohibiting her from drinking. Yes, it can be done. it won't stop her. but she will then be in violation of a court order. More ammo for you.
Get off your duff, and make something happen. No one can do this for you. There is no sobriety fairy that is going to land in your living room, sprinkle fairy dust and make this go away.
you asked for help. We've all been there. But if you don't fix this now, 20 years down the line it will just be worse. Much worse. Will it take the death one of your children to wake you up from this coma?