Handling husband's alcoholism

I've been with my husband for two and a half years now. We have three children, and soon to be four. (We both had children from previous relationships)

He's always had a drinking problem. He never drinks in front of our children, but he drinks at night probably around 3 times a week now. It is significantly better than when we first got together. My biggest problem is, he's almost always an entirely other person when he drinks. He gets MEAN. I've been diagnosed with C-PTSD, and most of my flashbacks and triggers are from being around him when he's had alcohol. I asked him to quit several months ago, when I had to call the cops on him because he got blackout drunk. He lost his shit towards me trying to drive him home. He wouldn't, but promised to cut back. It's never physical abuse, but the emotional abuse is awful. He will wake me up even if he's just a little buzzed to try and fight about anything. Or to hurt my feelings because I've apparently wronged him in some way. The smell of alcohol sends me into an anxiety/panic attack, and so does the sound of a metal tab on a can being popped open. Loud sudden noises will do it too. He woke me up angry that I didn't wake up with our son (1yo) while he was drinking Sunday night, and he was incredibly hurtful and called me names. Afterwards he tried to gaslight me saying there was no way he would have done that. I had it, and I told him he had to stop drinking altogether because I'm not going to keep putting up with this shit. He said he would stop entirely. Tonight he came home smelling like straight up mouth wash. I could still smell the hint of alcohol on him, and I can always tell through his body language and the way he moves that he had been drinking. He wasn't hateful thankfully. I'm honestly so exhausted and disappointed, I didn't have the energy to say anything to him. I'm so tired I can't even be mad anymore. Our relationship outside of alcohol is great. I love him more than anything, and he is so kind and thoughtful. But I don't know how to handle this anymore. If you made it through this, thank you. I guess all I'm looking for is some kind words, and maybe some advice.