Help!!!? FTM

Here’s a quick wrap up baby sleeps by himself in his pack n play next to our bed and falls asleep on his own after about 5-10 minutes of crying.

He will wake up any time between 3-4 hours after being asleep and i usually just put him to sleep next to me and nurse 😴 because I’m exhausted. What should I do to help him sleep longer. He doesn’t use a pacifier or any thing to put him to sleep he usually knocks out on his own after some crying.. anyone been or is in this boat 🥴 that can leave some advice.