There's a lot of worry among many women that they should supplement because their newborn isn't getting "enough" milk. Here is a visual on just how big a newborn tummy is at 1 day, 3 days, and 1 week:
That's amazing, isn't it? A marble, a shooter marble, a ping pong ball represent just how little baby needs at first. They literally only need drops in the first few
days. How many have seen women giving 4-6 ounce bottles in the first
few weeks... and then see them spit it up? Now you know why. They simply don't
need a lot.
As a comparison, here's another visual on tummy sizes:
Images courtesy Mom2Mom Breastfeeding Support