@etolkk123 I don't say this lightly, but your doctor is full of shit.
Most baby formulas in the US are fortified with iron. For this reason, anemia is actually less of a concern for formula-fed babies than for breastfed babies.
Nutritional needs for most babies are met by formula or breastmilk until 12 months. The amount of formula that you are feeding your baby is absolutely normal.
At 7 months hardly any babies are getting a significant amount of their calories from solids. The approach that you describe that you're taking is thoughtful and lovely and does not require any changes. You will slowly add more opportunities for your baby to have solids over the coming months.
