FTM and going back to work

I go back to work in a week . For the pass two weeks I’ve been trying to get my milk supply up . With tons of water, lactation cookies and oatmeal . I seem to only still get about 10-12 oz a day . That’s only 2-3 feedings for my son making it two days of pumping to give me one full day of feedings. My stock is little compared to all the others I’ve seen from you super mommy’s . I’m just worried I’m not pumping enough. Can a working mom tell me how you prepared to go back to work and the routine now being back at work with pumping and freezing . ? And if I’m doing good