Married to a man child.

I’ve been married for six months and I’m realizing that I am married to a man child. When we were dating I noticed that he has some irresponsible traits but I did too they didn’t appear is red flags. My husband is so financially irresponsible and is currently the only one working because I’m having health issues. He is 36 and I’m 26

and us living together is his first time not relying on his parents so it’s almost as if he doesn’t know how to pay bills. what do I do?