Advice?

Destiny • Mommy to my princess Kendall Nichcole❤️ Engaged to the most amazing guy 💍Life is great 👍
My daughter is 3 weeks and 4 days she is formula fed I'm feed her every couple of hours 3 to 4 oz and I feel like I'm over feeding her but she cries for more food. I have asked the doctor and she said she could be going through a growth spurt so to feed her a little more is okay. But has anyone else gone through this?