Baby sleeping

Why does my baby fight his sleep so much? He will eat his bottle then fall asleep. But will only stay asleep for like 20 minutes. Wake up crying and want to eat a little to fall asleep. He doesn’t want the binki he spits it out. He does this all day and then finally sleeps for like 4-5 hours at a time at night. He is a month and 1 week old. What can I do to help him sleep? Forgot to mention I pump and feed him breastmilk if that changes anything 🤷🏼‍♀️