Hello sir/ madam my son age 1.5 months he is unable to sit himself and walk without support but he trying to do activities.his weight 9kgs and height 83 cms .we consulted a doctor she said brain development issue. Use cos3 syrup . I have asked can u suggest any food for brain development doctor said there will be no change with food. And also she said cos3 syrup is just support we cannot say it will completely rectify . Then how can we have trust on doctor? Should I go for second opinion or can u give any suggestions.