How do I handle this? Ugh

I am with the love of my life. I do love him were 26 and 25 and have 4 kids. It's a ton of pressure. So he had a really bad upbringing I understand this. I feel at times it's a crutch. He can flip off the handle etc... So in our relationship hes hardly consistantly worked. I'm in nursing school now and I am stressed about it and raising 4 kids and then dealing with him at times. He can remind me of a child. I told him my line is the kids. He works an odd schedule il give him that but for 5 hrs usually at most. Like 330 or 4 to like 830 or 9am. So kids are in daycare 3 days a week and in 2 weeks 4 days a week. I'm in nursing school super demanding he does not help clean, cook, honestly eve with the kids unless I cry and thatd still a maybe. Says he has no time for himself which isn't really true he can do whatever he wants and me? No, first the pandemic, and two I would not have a chance if it inconveniences his plans. I'm getting fed up I know this isn't easy but I do the bulk of the work. I'm getting upset Because its about him recently no one else being selfish. He can be super sweet too but he does this in phases I can't help how he grew up but I can help how my kids grow up and because he does not want too doesn't mean my kids deserve it. He is acting like a 5th child not my fiance. I just kind of wanted to rant, I'm sorry but I'm so stressed I dont get a break.. it's taking a huge toll then hearing him complain about literally working and having to pay Bill's instead of spend it all on himself literally his words this morning....