Question for EBF who pump a stash

How many ounces do you pump in a 24 hour period to stash? I am trying to build my frozen milk up so I can work very part time. Baby is 4 weeks and a few days. When is your best output? And tips and tricks for supply? I am trying to drink loads of water...baked lactation cookies...eat oatmeal...etc. Trick is also that baby nurses on demand so it’s hard to find a time when I havnt fed her and have still enough time before she feeds again to pump. I can get 1/2-1oz in my haakaa so i try to use that frequently, but when I pump I only get about 1oz per side 😭