He was born @34 weeks , now he is 2 months 7 days old , he is 3.9 now , is it correct ?

A. Ma’am the weight of the child is not correct as per its age it is actually evaluated on the basis of the birthweight growth every month since your child is premature and minimum expectation would be 350 g a month for a full term it is 500 g in a month so please base it on the birthweight so you know exactly whether your child is gaining appropriate or not