My Baby Is 14 Months Old, Her Weight Is Just

My baby is 14 months old, her weight is just 6.04 kg. Just nw I hav started tonoferon syrup 2ml once daily ..her hemoglobin is v.low... She is in breast milk n eats little bit..plz suggest me how to improve her growth my baby is 14 months old my weight is just 6.4 kg just now I have started tonoferon syrup 2 ml 1 Steel for hemoglobin is very low she is in breast milk and its little bit please suggest me how to improve hair growth