You can give FM after your doctor suggestions. I have given Aptamil to my baby on my doctor's recommendation. He said it is closest to breastmilk and contains prebiotics which strengthens baby's gut and helps boost their immunity.

Breastmilk is the best for babies but if the mother is unable to breastfeed due to any reason then she can opt for a formula milk which is closest to breast milk and contains prebiotics as it strengthens baby's gut and helps boost their immunity.