I breast fed all my girls, still am with my youngest. With my oldest I gave her sips out of a real cup with no top on it. This seemed to help her realize that a cup was filled with juice, and that is a good thing. After helping her with a normal cup for a while (about a wk) she started taking sippy cups because she was familiar with the shape. Soon after that she was on her way to cup freedom! My middle girl just wants to be like big sis, so she was a lot easier. Good luck!