Breastfeeding question

Liz

Hey! I have been bf my baby girl since birth and she's 3 weeks. I feel like my supply is slowing down. I went from pumping 6-10 oz in between feeds to like 1 oz between feeds. How does my baby tell me that she's eating still from bf? I stopped pumping for two days because I was always engorged now it seems like I don't have milk.