hi doctor my baby is just 1yr 2 months and her weight is only 7kilo so i should worry about that or what i do so she gain weight

A. hello baby being triple its birth weight by age 1 means the baby si gaining well but some kids can also be slow weight gainers and if the baby 7IS active then weight is not a problem and any concern then it is better to check with your doctor and he will be able to guide you