my baby is 1yr 2 m old and her birth weight is 1.9kg. Now she is only 7.4 kg . She drinks milk 2 times in a day and 2 times at night. I feed her a banana or apple according to my availability at home. She eats dal rice , curd rice . I give her an egg twice a week. some times I give her sweetpotato also . but her weight is not gaining. she perfectly all right and active . how do my child gain weight and height??