My baby is not putting her weight though she eats ..she didn’t even start walking

A. hi babies weight gain depends on their birth weight usually they gain triple their birth weight by the age of 12 months so your child should have weight around 7.2 to 9 kg.at this stage of age. but if a child weighs low then you need to check Health issues like teething, indigestion, dehydration,worm Infection, nutritional deficiencies etc