At present it would seem prudent to continue giving your baby iron-fortified formula during the second year of life and very gradually wean him to dairy products, beginning with yogurt (Yogurt is easier to digest than milk.). If your toddler generally has a balanced diet and routine hemoglobin tests show that he is not even close to being anemic, then switch from formula to whole milk sometime during the second year, but don’t be in a hurry. Also, there are toddler formulas now that can also help with the transition from formula to milk.
• no cow’s milk before age one
• whole milk until two
• nonfat or low-fat milk after two
Source: Dr Sears