How many hours between formula feedings?

Kiera • Mommy to my baby boy born in 18’ & baby girl born in 20’ ❤️

My baby will 3 weeks tomorrow and she’s been drinking 2-3 oz every 3-4 hours. But lately she’s seems to be hungry and crying for milk after 2 hours has passed. I want to listen to the doctors instructions and feed her every 3-4 hours but it sucks to see her cry for food. How much are your babies eating?