How baby can gain weight. My baby girl is loosing weight and is becoming slim day by day?

A. hello. sometimes the baby's growth does not show up on their weight and only goes into their height or into their brain development. if the child is healthy happy active and taking their meals properly then there is nothing to worry about. height and weight of the child is genetic and is inherited in their genes by their parents so slowly and steadily they will achieve a healthy weight and height