Lost about what to do

I have been exclusively pumping for 5 months. In the beginning, i had an over supply like most do and was able to freeze a lot. Once my supply regulated, I dropped to 26 oz a day. Since my period returned, I’ve only been pumping 19 oz a day. I’ve tried supplements, water, power pumping, and NOTHING is working. I’m really afraid that I’m going to have to quit as soon as my freezer supply runs out. I know there’s not much that can help at this point, I just needed to vent about it somewhere.