beyond frustrated 😩

I don't know what to do anymore... I spent literally the whole week trying to get my milk back. Pumping every 2-3 hrs, power pumping, nursing, drinking water, mothers milk tea, fenugreek, oatmeal and everything else under the sun. It seems like I'm just producing barely enough for her and nothing to store for the next day. I'm going back to work next week and only pumping less than half an ounce maybe 1 on a good day. She hates the formula now that I've been nursing her and when I was giving it to her she was gassey and constipated now she goes every day and a much happier baby. Please help!