How is this possible, pumping question and nursing question?

I had a drop in my supply a month ago and have been trying to get it back up. I've been working diligently on the weekends trying to nurse more and pump more frequently during the week and after my daughter nurses, it had been pretty consistent up until last week. I was usually getting 5 oz first thing in the morning. Well I was sick last Wednesday with a fever and only pumped 4 oz, then the next morning I pumped 6oz, I haven't pumped that much since before my supply dropped, I was getting 7oz actually on average at that point. But then the next day it was back down to 5 again. Well this weekend, I made it a point to try to nurse my daughter the entire day, Saturday morning I nursed her when she woke up and then pumped after wards, then started nursing her as needed throughout the day. She got to the point like she normally does when she starts getting agitated because she's hungry and isn't getting a steady flow like she wants. So when she'd do that I'd get up with her and walk around for a minute until she was calm and then put her back on the . This worked for the most part. So then this morning was the test to see if my supply had increased at all and I only got 4.5 oz which is less than what I was getting even after my supply dropped. I am so ridiculously fed up at this point. I'm taking fenugreek, drinking mother's milk tea and pumping like crazy. I'm so tired of having to listen to my daughter scream during feedings because she can't get as much as she needs out. Of course my husband is sick of it too and he starts yelling at me to give her a bottle so he doesn't have to listen to her cry. I am at my wits end. I am really trying hard to keep this up as I really enjoy nursing her, but I hate that she is fussing when she nurses. I'm trying to make it 5.5 months more which is when she turns 1 and I really want this to work...I've tried just about everything...How long does it take to get your supply back up, I know it can be done, but why is it not working for me?