Enfamil® 2 our next stage infant formula specially designed for babies 6-18 months of age with age appropriate levels of calcium, iron and protein. Enfamil 2 has more calcium and protein than Enfamil®, Calcium recommendations for babies increase after 6 months and double after the age of one. Therefore, when your baby is ready for the next stage of development, you can give her nutrition that helps nourish it.