what is the normal weight of 8 month old baby? at the time of birth baby weight is 3 kgs

A. If The child is somewhere around 7 to 8 KG at this age then that’s considered a good and healthy weight gain looking at the birth weight I am telling you because if I go by doctors think then your child should be 9 KG by the age of 12 months if you tell me about 8 KG also as of now then that’s appropriate