I want to stop breastfeeding

He doesn't get full. After him nursing 30 minutes on each side I still have to give him a 4 oz bottle of formula for him to stop showing signs of hunger. HES 6 WEEKS OLD. I think that's way to much But it the only way for him to stop crying and eating his hands. a pacifier doesn't help he spits it out when he notices there's no milk coming out of that. so I just want to transition completely over to formula how do I do it so that my breasts won't get super full and feel weird.

Update : I HAD to start supplementing because he wasn't gaining any weight with my breast alone.

And I don't feed him on a timer 30 minutes is just how long it takes until he starts crying because no more is coming out of one side.