My baby is 11 months her birth weight was 3kg and now it is 6.1kg in 11 months what to do?

A. It seems like your child hasn’t gained anything I just tell you the basic concept is that the child should be three times of the birth weight by the age of 12 and why is the birth weight by the age of six months child maintaining a weight gain for six month old child I suggest you to please see your doctor for further assistance