My 22 days old granddaughter was born as a preterm at 33 weeks has prolonged jaundice , bilirubin level reduces after phototherapy and again raises after three or four days this happens three times Now for the fourth time again bilirubin level raised Her birth weight is 1.7kg and now she is 2.1kg.She is gaining weight, we were able to give 10 feeds per day , urinates 8 times a day and stool is green in colour Need suggestions