my baby weight at birth is 2.49 kg and now she is 3kg which aptamil formula should I use either gold stage 1 or preterm formula??

A. Mam but what is your child’s birth time is your child premature or full term please mention that clearly because pre-Nan or milk for a premature child is only given when the child is premature if your child is born with 2.5 and now gaining 500 g a month for your child is getting very well you should continue with the regular stage of milk