Our ped kept telling us to feed DS rice cereal (he's 6 mos) because she says he needs it for the iron. We weren't thrilled about the idea but we tried it one day, mixed with some EBM. He seemed to enjoy eating it, and then he took a 2 hr nap (much longer than usual) and then was SO quiet and passive all the rest of the day... not like him at all!! Was it some kind of reaction to the rice cereal? Should we try again or not bother? We usually just let him feed himself little bits of soft fruits and veggies, he also eats tiny amounts of applesauce with a spoon, but he really isn't eating very much yet.