when did you start baby on starter sippy cup?

My daughter will be 6 months old at the end of this month and I just bought a starter cup for 6+ months. She seems to like it more then her bottles. I know some people say not to wean them until a year old.... but she just enjoys it more and eats better from it. What is your ladies opinions? Do y'all think she's ready to start switching over or not just yet.? Thank you for any advice and opinions 😊