#asktheexperts My baby is 2 months old. He is weighing only 3.9kg. His birth weight was 3.4 kg. He cries often during night time. Doctor told me that he cries because he is hungry and my milk is not sufficient. I breastfed him on demand and sometimes I feed him continuously for about an hour continuously. So doctor said you should feed him only 20 mins to half an hour. After that he told me to feed formula milk. I am worried. When will my milk be sufficient for my baby. Upto how many months I have to feed formula milk for my baby? Will everything be normal within 6 months?