J.C.
If she only needs it for sleeping.. you may find this easier than you think. When my oldest was 2 I simply told her that she was too old for a paci anymore at nap time. She had (still does) a "yellow teddy" that she used, so I told her that yellow teddy would take care of her and that she would be fine. I also promised that I would ck on her in ten minutes and if she still needed the paci to fall asleep, I would give it to her. She fell asleep without a problem. That night she asked again, and I said the same thing. She fell asleep without a problem and never had a paci again. Her sister was 3 months at the time. And if she even mentioned her sister's paci, it was always a discussion of what a big girl she was compared to the baby and all the other things she could do that her sister could not. It was never an issue. I also got rid of her sister's when she was only 8 months, and her younger brother got rid of his at 10 months. Good luck and congrats