We found out Bryce was severely anemic when he was about 19 months or so. We had absolutely no clue until our GI doctor noticed that he was pale and had his blood tested. His problem was that he had been on breastmilk only for those 19 months, and since he wasn’t eating any solids at all he wasn’t getting enough iron despite his mulitvitamin with iron. We started him on iron drops along with the vitamin and also started him on formula with iron. That combination totally turned him around and his anemia was gone.
Since Seth’s numbers were just barely under normal, I think if I were you I would just try to add more iron into his diet like she said, or maybe add a multivitamin with iron and then see where he is at his appointment in March. Good luck! I hope it’s nothing to worry about and his levels go back up.