is there a point I should pull him off?

Grace • Zion James 1/22/17, Kingston👼🏽 10/14/18, rainbow baby due December 19’🌈💕
My little guy is 3 days old. The LC at the hospital said just let him feed whenever he's hungry and that he'll let me know when he's done. But he's been going now for 30 minutes on my right side and I don't know if I should pull him off?? Is he gonna stuff himself too full? My milk supply is in already and it's not just colostrum anymore, and it kinda just like pours out so I know he's getting a steady flow while nursing...