Is something wrong?!

My baby boy was born a week ago and he was born two weeks early due to him being breech and my medical issues. He was born at 8lbs 3.3oz and when we left the hospital he was 7lbs 6oz.

He is eating a 3oz mixed breast milk bottle every 2 hours. He is also having runny poop diapers (normal I know) every diaper! (Which I don’t think is normal) he is my second baby and I didn’t experience this with his sister.

Has anyone else experienced this with their newborn? I’m a little worried.