Breastfeeding

I’m about ready to quit. My daughter prefers a bottle and it doesn’t matter how much I pump, what I eat, what I do to try to produce more, nothing works. I get less and less each time I pump. She doesn’t mind formula and honestly, the way I see it, if she’ll take formula and my boobs are on the way to not producing anymore what’s the point in pumping 5-6 times a day?? I know I’ve posted a lot lately about breastfeeding and production but I’m just getting so frustrated with it.