Hello sir my baby boy is 2 months 22 days old and weight is 4.2 kg is it ok?

A. It would totally depend upon the birth weight of the child or practically your child should gain at least half a kilogram in a month so if your child has gained that much of weight then this weight is going to be appropriate on top of the birth you can calculate and if not then this will be underweight so you’ll have to check according to the birth weight of your child