Sayang, if baby has jaundice (kuning), please see your doctor or go to the clinic straightaway, they need to check the bilirubin levels properly, okay? This is something that needs medical eyes on it. Aside from frequent breastfeeding, I can't really suggest shortcuts because jaundice needs proper monitoring, a few of my mum friends had babies with kuning, and their doctors gave them specific guidance based on the baby's levels. Sometimes it settles on its own, sometimes baby needs phototherapy under proper care. Don't worry, just get checked out soon, the doctors will know what's best for your little one. Sending you strength, mama!