FTM with sippy cup questions

Lacey

Hi. I'm confused about the whole sippy cup transition or stages or whatever. Right now my LO is 11.5 months old. Currently she takes all her formula in a bottle and then a sippy cup with water is always available to her during the day and she gets it at meals. It's the kind with a soft spout and handles. My questions are 1. When are babies typically completely weaned from a bottle? 2. I was gifted a ton of different hand-me-down sippy cups, how do I differentiate between stage 2 and stage 3 so I know what to give her next? 3. How can I tell when she is ready for the next stage? TIA!