Not getting anywhere

So my daughters dad and I have been bumping heads a lot since our daughter has been born. She is almost 4 months and he doesn't really help. we live in two seperate homes, due to trying to fix things within our relationship. Anytime his daughter and I come over he never even talks to me. I just sit on the couch and he ignores our daughter and plays video games or leaves. He always tries to make me feel bad for wanting what's best for our daughter. I'm always having to get on him about money. we each got over 1000$ recently. he blew his and now relys on my money. And I dont mind helping him out but the money I got I use for my daughter and stuff that she needs ( formula, wipes, diapers ect) and he gets mad that I dont want to spend it. I guess it just sucks because i left everything so that my daughter would have her dad in her life.(we separated for a month) and I feel like i made the wrong choice. I should've stayed where I was happy, and had more support. he'd rather do stupid stuff than spend time with his daughter. I've tried to talk to him and express my feelings and he told me "well my life doesn't revolve around you guys. I have my own life" and he told me this after we decided to try and work things out... I'm just upset because I feel like he should've stepped up, but instead my daughter I'd going to have a dad that puts himself first. I just need some reassurance that I can do this without him I guess...I dont know😕