good morning doctor, meri beti 3 saal ki ho gayi hai but uska weight or height nahi badh raha, uska weight 9.5 kg hai. but she is very active

A. Good morning, When growing kids don't gain weight as they should, it is called "failure to thrive." Failure to thrive is not a disease or disorder itself. Rather, it's a sign that a child is undernourished. In general, kids who fail to thrive are not getting enough calories to grow and gain weight in a healthy way.