#asktheexperts My baby is 4 month 6 days old. Her birth weight is 3.56kg and her present weight is 6.11kg. She is on formula fed and she drinks for every 4 hours. Is this weight normal or it should be increased?? Also by the end of 5th month i have heard that baby should double her birth weight. Is it compulsory?? What happens if baby’s weight doesnt double??