Milk supply for pumping

Kh
I'm strictly pumping for my little one since she was not able to latch on. I'm trying to pump milk for her to drink daily but also to try and store milk for when I go to work. However, I feel as if I'm not producing enough milk. I only make enough were I can either feed her breast milk once a day and store the rest or store one and feed her the rest. Which is roughly 6oz on a good day. I have both a manual and electric pump and rotate which ones to use sometimes. Does anyone have and advice on how I can increase my supply to be able to feed her throughout the day and store some for when I go back to work. Is it even possible to make that much milk?