my son age is 9th month running & he is 9 kg is it correct weight otherwise I have to increase his weight. but he is looking small

A. Where is completely fine a child should be somewhere around 10 KG me completing the age of 12 months and right now at the age of nine months your child Er already 9 KG at the time of nine month so I do not see any problem is there with the weight gain of the child is going absolutely good