Exclusive pumping

I feel like the past few days my supply is dropping. Between both breasts I can sometimes get 2.5–3 oz but usually it’s under 2 oz and baby drinks 2 oz every 2 hours right now so I pump every two hours and twice in the middle of the night. I am not due to pump again for another 30 minutes but my breasts are tingly. I know normally that’s your let down while you’re feeding or pumping but I only feel it when I’m not. I have a LC coming Thursday because I really want to nurse but baby falls asleep and the last time we went to a different LC it took him an hour to eat less than 2 oz.

I for some reason don’t want to go to formula. I think it’s a pride/feeling like a failure type thing but idk I might have to.