Medi is a bit younger, she has 5 bf during the day plus one nf. We're also doing blw but like your ds she's not taking much either. I remember a convo I had with the LC at the bf support group I go to, basically the gist was that while iron levels in breast milk are low, it is absorbed very well. Iron in food may not be as easily absorbed. That said, I do try to give Medi iron rich food, like meat and lentils but it often goes on the floor or in the dog!