Hi doctor...my baby is 4 months old and her weight is 5.2.her birth weight is 2.5 and my ped has given farex lbw and since she is not liking much recently in 15 days back I changes to lactogen which led to loose motions and doctor now has given soy isolate formula powder (LF 100)...my doubt here is...can I fed soy based formula and when researched heard its not good to give ...shall I continue back to farex lbw ???will tht again cause loose motion if I give back farex lbw ???