Mom struggle

I have an 8 week old baby, who I am attempting to breast feed, my whole family though keeps trying to force me to start giving him formula. I pump about 4oz every 4-5 hours on each breast and sometimes on busy days 8oz every 10 hours on each breast. My mother, mother in law, and step daughter keep telling me to start giving him formula because I am not producing enough, which I’ve been taking lactation teas and pills to attempt to pump enough, (which usually is enough) and my husband as well keeps trying to. Today he walked in with a bottle made of formula, as I was pumping and I asked him what he was doing and he said “the baby has been fussy I’m going to see if this calms him down and I made a face and he said what? And I told him to just give him the breast milk that was in the fridge and he said no this formula is for fussiness and i made another face and he said “I forget that I’m not allowed to give him what I want” and stormed off. I feel like I’m alone on trying to just exclusively breast feed, has anyone else dealt with this? And if so what did y’all do?