Baby looks premature but full term

Rayne • 👼 - February 10th, 2019, chemical - October 21st, 2020, 👼 - February 12th, 2021, chemical - April 4th, 2021. Chemical - May 2nd, 2021. No babies yet.

Hey ladies, does anyone have babies who are full term but very tiny? My baby was born in 20th percentile and she needs to gain weight to get her heart surgery. She gains weight, but not that great. How your babies were growing? If possible how did they look in 3-4 moths in terms of weight and looks and what was their weight at birth?