We started with Tyler at about the same time as your DD. First, we put whole milk in one of his bottles for a couple of days to make sure he'd drink it. Once we knew he was okay with drinking it, we dropped a bottle and replaced it with a mealtime sippy of whole milk, waited several days for his appetite to adjust, then did the same with another bottle. It took about 2 wks, then all we had to get rid of was the bedtime bottle, which was actually much easier than I thought. It took him awhile to really drink from the sippy, he only took little dainty sips and wasn't getting near enough milk so we made sure to offer it a LOT during the day (not just at mealtimes) and give him plenty of dairy foods to make up for it. A few days after all the bottles were gone, he started drinking really well from the sippy. From what I've heard, that's pretty common...it's like they know they have another preferred way of drinking (bottles) and will hold out for that if they know it's coming.
As for nutrition, if you offer her a good variety of healthy foods, she should be fine. It's easy to start obsessing about what they eat once the formula's gone, espcecially because their appetites and preferences are all over the map, but it all usually evens out!
