I inform mothers of young infants every day on this Forum that the only important food for a baby of 15 weeks is milk. Water is not a food and is unnecessary at her age.It may be that she is getting enough breast milk and does not need the extra Isomil. Why is she on Isomil? If she is thought to be allergic to cow's milk you can try NAN HA and see if she tolerates this formula better than Isomil.
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