Having hard time telling if baby is still hungry or not

Ceyonia • 22. Married. Mommy of Titan Amari Smith 😌.
I'm really getting so confused when trying to tell if my baby is still hungry or not. I can initially tell when he's hungry if he start to fus, smack his lips, & suck on his hand . But after about 20-30 mins in with feeding him, sometimes he'll move his head away from my breasts and stop eating. Or after awhile he'll just hold milk in his mouth & slowly spit it out . So I stop feeding him , thinking he's full. But sometimes he'll seem content for a few mins. & then go right back to making the same faces like he's still hungry. So I feed again, but worry about over feeding. It's so confusing 😩😩 & I get so frustrated that I can't pick up my baby's cues correctly . He's 1 week old