I've been breastfeeding for over a month now but mostly pumping but latching a few times a day to…

I've been breastfeeding for over a month now but mostly pumping but latching a few times a day to keep my milk supply but lately my nipples have been reallyyyy hurting and are always hard. I even keep nipple butter on them. It's getting so frustrating and I don't know what to do anymore. It's starting to deter me from doing it. 😐