My son has been refusing milk for the past 3 days, he only drank a few ounces each day & prefers plain water. He is only 20 months!

don't worry, it's okay for babies to sometimes go off a particular food or drink for a few days at an end... instead of trying to force your baby to drink milk, make sure your baby stays properly hydrated. give liquids such as water, fresh juices and soups. if your baby still does not take milk at all, do speak with the doc