Husband has spending and drinking problem

So, my husband and I have fought about his drinking for our entire 4 years of marriage and it just doesn’t seem to get any better, or it will get better but he will have like 2-3 “bad days” a month where he just has zero self control. He doesn’t “abuse” me or anything, he just makes dumb decisions (tonight he was drunk and tried “sneaking out” to a friends house to play video games while I was sleeping, I happened to wake up at that time, and we have a 13m old baby and I’m 25 weeks pregnant) which is it a huge deal? No, but quite immature and retarded. That led to a small fight where things got a little out of hand (like usual)

Other thing is when we got married we worked HARD to get HIM out of debt (almost 20k) ((I had 0 debt)) and we’ve been super good for the most part about it ever since, minus him buying a 4K bike last year which was paid of relatively quick. Well, I haven’t worked ever since I had our first child and I’m due with #2 in December and it was our plan all along that I would stay home with the kids and finish my degree online that he would pay for because we were now Debt free and could afford it, thanks to both our hard work. He bought a new “project car” (which I said ok to) because he wants to build it up for our son who was named after his deceased father, who had the same car... that was suppose to be 4k tops. I just found out he’s spent almost $13k on parts and tools for rebuilding etc when it was suppose to be a SLOW project because our son is literally one. For me to finish my degree is going to cost roughly 12k...

I’m so frustrated with him I don’t know what to do. He says he will stop drinking, it doesn’t happen. He says he’s only going to spend x amount of money, he spends almost triple that... I’m just trying to finish my school, raise a toddler, and soon a newborn too, and he’s just being a jerk. The hardest part is that he is an AMAZING dad and husband other than his occasional drinking and spending issues. Like, he is perfect in every other area... he spoils me, thinks of me, takes good care of our son, takes good care of the house when I ask him to, works hard at work, has a successful career and is driven, is respectful, just an all around good guy... so I’m so frustrated. I don’t know what to do, but somethings got to give.