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You are seeing a 16 month old toddler who is a very picky eater. He mostly eats 32 oz of whole milk per day, and a few finger foods. His parents feel that he looks pale – you check a hemoglobin and find that they are correct! It is 4.8 g/dL. He is active and playful, hemodynamically stable, and has no evidence of bleeding. He has no petechiae, purpura, hepatosplenomegaly, or mass, and the remainder of his blood counts (WBC, platelets) are normal. 

What is the best management course for this patient?