Bad dad

My fiance is not the worst father in the world but he's a pretty shitty father. He refuses to change our daughter's poop diapers, bitches when I tell him to change her peed diaper, gets annoyed when he has to feed her because she has a bad habit of moving her head back and forth (she's a nosey five month old) and he always complains when I tell him to buy her something she needs like diapers or food or clothes. Also, he always wants me to put her on her swing when he's over my house so he doesn't have to deal with her. We don't have a place yet so we still live with our parents. He rather sleep or play video games instead of spend time with our daughter. I love him and keep telling myself he'll grow up but i highly doubt he will. He's 21 and I'm 19. Our daughter was NOT planned. We have a wedding date for August 2018 but at this point until he can be a better father, the father our daughter deserves, I think we're cancelling the wedding.