When we dropped Tyler's bottles, we just changed his entire routine so he wouldn't be getting a sippy at "bottle time." I'd have his breakfast as ready as I could the night before so I could get it on the table quickly in the morning, and he'd go straight into the high chair for breakfast and a sippy. That's how we did it all day...snack with sippy, lunch with sippy, etc, and we ditched the bedtime bottle completely and didn't offer a sippy. We also had the sippy available throughout the day (insulated cups are great for this) until his intake went up, and we also made sure to offer plenty of dairy.