Exclusively pumping

Hi everyone, so my LO is one month old. 4 days into trying to breastfeed, we ended up giving her formula because she wouldn’t latch on. At 3 and a half weeks, I decided to start pumping because she gets really colicky with the formula and I was still leaking so I thought why not? I’ve been pumping every 2 hours and one power pump early mornings. And I’ve already seen a difference but it’s still not enough to give baby at every feeding. Any advice on how to rebuild my supply? I feel lost.