Spitting up when he wakes up

Chenoa

My baby will always spit up once he wakes up, he just slept for an hour and the number one way i can get him to go to sleep is with nursing. I always try to burp him, when he’s sleeping it’s hard to get those burps out and i make sure to hold him upright he for at least 20 min. But now and hour later, he’s grunting and slowly waking up and has spit up all over his clothes already 3 times. And it’s a good amount of spit up. Of course he still sleeping and doesn’t seem to care but sometimes he does and it’ll wake him up. He’s even sleeping in his newborn lounger that keeps him up right. Anyone else dealing with this ☹️