Can someone tell me if they think I'm losing my milk supply??

I'm sorry this is kind of long but someone please help 🙏🏻 I've been breastfeeding for a little over 3 months now and was making a little extra but seemed to regulate out to match exactly what he was eating. I work, so I try to keep up a pretty good sized stash and decided I would try to bring up my supply again to keep adding to it. So I added back in the pumping sessions at night and try to pump after every feeding, I'm also taking fennugreek, brewers yeast, and power pumping. I've been at this for 4-5 days now and feel like my supply isn't getting any better. I can't tell if it's going down more or if it's just taking a while to catch up to the demand. I'm feeding him about every 2.5-3 hours and then pumping after and he's also been eating significantly longer than usual. So today I fed him on one side (I usually do both) but he was so tired that I only got the one side and decided to pump to relieve the other and only got 1 ounce after 30 minutes! I typically get at least 3 per side. And it had been over 3 hours since I'd fed him or pumped on that side. Am I losing milk or just really over doing it and my body hasn't compensated yet?!