Anyone else's husbands do this?

I'm stuck at home alone with my 3 month old son from 5pm until 3am the next day. When he is home he sleeps from 8am until 3:30pm. He makes something to eat and leaves his mess for me to clean up after I get up at 7:30am to feed our son. He will not wake up to tend to our son. When I wake him up and ask him for help with our son he says no that he needs his sleep for work later. He doesn't help out around the house on his days off unless I ask them he gives me an attitude the entire time. He tends to play video games from the time he gets up to the time he goes to bed. We barely spend time together cause I'm busy with house work and raising our son. I feel so alone. I have talked to him multiple times and even threatened to leave but he says he will help more and never follows through with his word.