1 month old formula feeding

My daughter eats about 2-3 oz every 2 hours. I keep reading that at 1 month she should be getting 3-4 oz every 3-4 hours. Should she be eating more?

She seems satisfied and but when she wakes up to eat I can hear her stomach making noises like it's really empty and she cries as soon as she wakes up. I just don't want to overfeed her.

How much does your baby eat? And how often?