In newborns with jaundice, it is important to determine whether it is physiological or pathological jaundice. Typically, babies with normal physiological jaundice are generally in good condition, able to eat and sleep well. If they are hungry or uncomfortable, they will cry and wake up. However, if a baby continuously sleeps without waking up for a long period of time, does not wake up even when stimulated, it might indicate a condition of excessive sleepiness, which then falls into a pathological state. If the jaundice significantly worsens and affects the brain, it is often referred to as bilirubin encephalopathy, which might initially manifest as excessive sleepiness. Severe infections or other diseases can also present excessive sleepiness as a symptom. Therefore, if you notice that the baby is sleeping significantly more than usual, and appears lethargic and unresponsive, it is advisable to seek medical attention promptly.