Needing advice

Okay so this is my 4th breastfed baby and I am currently 9 days postpartum during the day baby boy nurses and goes to sleep and sleeps all by himself in his bassinet next to my bed but at night everytime I place him into his bassinet after nursing for 30 or more minutes (he ends the session) he wakes up after about 5 -10min as if he's hungry againn he does this all through the night unless I allow him to cosleep in which mostly involves me up all night . Please any advice will help