What do I do

So I’m a SAHM battling with PPD and now my fiancé is telling me the reason why he has been neglecting me and our 4 month old daughter is because he is also depressed and feels like he is failing in life. I’ve told him for years he needs to go se someone and get on medicine and he always comes up with excuses like he can’t get time off work to go to a doctors appointment but yet he called in today bc he was up until the morning on his video game and when he woke up he’s been on it all day. I get how hard depressed can be bc I’ve dealt with it for years and it became 10X worse bc if PP but since having our daughter I don’t get to neglect her or things that need to be done. I don’t get the choice to tune the world around me out bc I made the choice to bring another life into this world and there so reason for her to suffer with my problems. He doesn’t get that. He does not spend time with her nor me. I’m trying so hard not to be mad at him. What are some ways to talk to him about this and not sound mean? I’m going through depression too but I don’t get the choice of not being present.