How much formula should my two week old eat?

Depends: Like everything else about babies each one is an individual and has slightly different needs/wants. However, most 2 week olds will eat about 2-3 ounces every 2-3 hours. Keep in mind that this amount will be increasing each week as your baby goes through many growth spurts in the first 6 months of life.

Self regulate: Babies do a good job to regulate how much they are suppose to eat. As long as your baby is satisfied after a feed and growing well, you should not worry about the quantity.