Missed a pump

I pump 3x daily, and have been thinking of dropping to 2x pumps. Anyway, the other day I accidentally missed my middle of the day pump and only pumped twice that day. I returned to 3x pumps the next day as usual, but since then, my pump amount in the middle of the day has dropped significantly. Is this likely to come back, or should I just drop it altogether now to 2 ppd?