Baby won’t sleep in bassinet...HELP!

Hi there mommas! I need some advice...so, I guess I’ve spoiled my almost three week old. He likes to cuddle with me when he sleeps. Once he’s passed out I can lay him in his bassinet but he wakes up about 10 mins. later...I have no idea how to get him to sleep in his bassinet...do you moms have any tricks? Or is there something else you use to let your little one sleep in?? Thank you in advance!