How do i clean the milk from a newborns tongue?

Not necessary: Mild does not need to be cleaned off a newborn's tongue. But if there is significant white plague that adheres to the tongue and ling of the mouth it may be a yeast infection of the mouth. Most with go away untreated, but some will need medication to resolve.

Brush and wipe: Use a soft brush or a cotton gauze and when teeth erupt do the same to teeth.