I was going to post an answer but after reading the ones there they were really spot on. There will be good days and bad days, one day they just start sleeping. Don’t put too much pressure on yourself, do whatever gets you some rest aswell. All the best

burp every few minutes during feeding instead of waiting until the end of the feed. Is he putting on enough weight? This should be a good indicator as to wether he’s latching on properly. Are you feeding from one side only or both? I would feed from one side only to ensure he’s getting enough hind (fatty) milk, then a top up from the other side if you want. He should be sleeping solidly between feeds. After a feed, let him have ‘play’ time, then sleep. So feed, play, sleep.

My boy has nights where he grizzles and fights sleep. I just persist. Some nights are good, others take hours. One day it will just get easier.

Perhaps he’s got reflux. Go see GP or child maternal health nurse.