I feel like my husband is my second child.. it’s ruining our relationship

So my husband and I are the same age 23. I have a lot more life experience than him and I know men mature slower than women. He is SO immature. He does shit just to get attention. He does NOTHING around the house. Other than take out the trash after it’s overflowing and I tell him too and now the yard which takes him all damn day (it shouldn’t). I cook, I clean, I take care of our daughter. He got fired over a month ago for his stupid actions. He lets our bills get behind and we end up paying late fees. Not because we don’t have the money but he’s so damn lazy. He’s gained over 100 pounds since we got married which I’ve put on some weight too but maybe 25lbs? And I had our baby. The dr told him to loose weight that it’s a problem for his blood pressure. I’ve tried dieting and working out but he refuses. We don’t pay rent because my house is paid for. All he does is play games on his phone and give me attitude when I ask him to do the smallest thing. I try to talk to him but he just shuts me out and says nothings wrong. He gives me hateful looks all day long then says it’s nothing when I ask. Like dude wtf. Grow up. Our sex life sucks when it use to be amazing. I’m just exhausted of his childish ways and I talk to him and he changes for a day or two then right back to the same old bullshit.