It's finally time. My child is old enough to be drinking from a cup; a sippy, if not an open-mouthed one. I reason that we've been making the switch for some time—after all, it is only milk that is served in a bottle. Juice comes from a sippy cup or a juice-box—we've even learned to get all of the juice out of the box without spilling or squeezing. But alas, it's time for us to change the way we consume liquids.I've been trying for months to present milk in a cup. I even use a clear plastic one .