My nanny is advising me to put my 3 month old on a schedule where he feeds every 3 hours but others tell me I should feed on demand. What's the right approach?

Agree with Diana. The doctors and nurses had all advised me to feed on demand as different babies have different tummy sizes. For my son, I was worried that I was overfeeding but the doctor had reassured me that it was perfectly fine and to feed on demand instead of waiting 3 hours. As long as he is not "merlion"-ing after his feeds and he has enough wet diapers a day, it's should be fine