Breast pumping

Hailey • Happily taken❤️ babygirl was born 2/2/18👶🏼💜

My baby is going to be a month old tomorrow and she has been getting breast milk 95% of the time but I’m pumping it because she can not latch. My nipples won’t allow me to. I maybe get 3 oz all together and that’s not enough. Is there anything I can do to up my supply?!