Hi, I have twin daughters of 1.5 yrs. One of my daughter was born underweight i.e 1.65kg birth weight and her height was 48cm. Till know also she has not gained her average body weight as per her age. Doctors say it's normal as far as she is reaching her growth milestone.Her height is also very less as compared to her age height i.e 77 cm. I M Very much worried.Kindly advice

Regards,
Megha