Im I over feeding?

No one has actually Told me My Milk supply is low. But At the hospital they supplemented With formula because baby was still hungry . He’s Now 5 Weeks Old And Im still stuck Supplementing But I Breastfeed And Then Give Him 2 ozBottle But Even After That He’s Still Fussy & Sucking His Hand . Im worried that I might be over feeding Him. I feel like Why should I breast feed if hes never satisfy. I Have Given Him at least 4oz of formula after breastfeeding and I feel like thats what a regular Only formula fed baby should be drinking . I Would Love to stop Supplementing but I Can’t He’s ALWAYS hungry & I Could Have Him On My Breast An Hour Each Breast And Nope He’s Still Hungry . My nipples hurt😕😕 I Havent Got enough sleep . What Should I Do? I don’t want to give up on breastfeeding. Is My Milk Supply Low? I Only pump 1oz from both breast.