Exclusive Pumping

Hey mamas, I am 7months pp. This breastfeeding and pumping has been such a long journey. Pretty much been struggling since day 1.The pump in style pump killed my supply. The baby was super fuzzy n crying at breast so I combo feed since the beginning HUGE mistake.I should’ve just let him cluster feed every couple of mins. At one point he completely stopped latching. Now he latches for like a min or two but on and off. I bought the spectra the pink one and I get about 0.25 each section. Basically it takes me 4 days to make him a 4-5oz bottle. I also just bought the eufy s1 pro and that one literally gets me like two drops. I have tried all the flanges I don’t even know if im using the correct ones. This is so discouraging. My doctor told me to accept that my journey is done that there is nothing else I can do. Should I just give up???