My son is going to be 10 months old. He has been on enfamil infant since being newborn and he does just fine with that formula. A friend of mine gave me 10 cans of enfamil gentlease. I was wondering if it would be okay to use those 10 cans and then switch back?! Both formulas are milk based with iron. And both formulas have almost exactly the same vitamins. Only difference on the ingredients is the first ingredient in the gentlease is corn syrup and in the formula he uses now is nonfat milk is listed as the first ingredient! And opinions would be appreciated 😊