If I may ...
Back in the day, mothers that couldn't breast feed used goat's milk, and pureed and strained vegetables for the minerals.
Today's infant "formulas" are crap junk food made to maximized profits for corporations and their shareholders.
Look at some of the ingredients used on two brands ... crap vegetable oils, GMO soy oil, whey protein, (the worse type), and synthetic vitamins which are not bioavailable to the human body, and are just excreted in the urine, (you can tell from their use of synthetic niacinamide-B3). Nicotinic acid is the natural form of B3. If lazy mothers, women, want sick children, and feminized boys, from the soy, continue using this crap. Personally I consider it a form of child abuse.
If manufactures were to use all natural ingredients, there would be far more healthier, less getting sick, babies. Though is would cost more. But, then, what price for a strong growing healthy son or daughter?