hi my dd is almost 2 and a half. We introduced the potty to her at around one thinking if she gets used to seeing it she'll start using it. She did use it once and we had a big celebration where she got treats and stickers but then refused to use it again. I got her a seat for the toilet and last week,months after using the potty for that one time, went to the toilet once. Again we did a big celebration with stickers and she was so happy with herself she kept telling everyone. Then nothing. Any tips on how to keep her going? I ask her if she needs the toilet and she always says no until she's really desperate then she cries for a nappy.