Supply is low

I’m currently one month pp tomorrow and planned to breastfeed if possible. My first week I was producing 8 ounces when I would pump. My baby got jaundice and her pediatrician suggested formula to help since I was okay with not bf. Now that she’s healthy and everything I want to try again but didn’t keep up with pumping. I can barely even produce half an ounce now and I’m so sad. Does anyone know how to increase my supply or if it’s even possible? I struggle to eat and I know that doesn’t help. It’s just hard since I’m busy and forget. Plus since I got pregnant with her I just hate eating.

Update: I have baby latching a few times a day and pumping more often! I drink more water and so far Ive made an ounce the last two sessions! Not much but definitely progress!