Breast milk

Curious for moms who pump, how much do you get at a morning session, mid day, evening and night (8pm on)

I have noticed a dip in my supply :( I'm not sure if this is normal or if something's going on... I ordered new parts incase that was what was causing the issue. I had a coworker who has a baby about a week older mention that she's been eating more and that her supply has spiked but I feel like I already am eating as much as possible :(

I normally pump around 8pm and get 3 oz now and at midnight when I get another 3 oz.