Seablue, I have a DD2-1/2 who has been potty-training. She also went back and forth between wanting to be a baby and a big girl. I just have to say that we totally backed off the potty-training (taking the power struggle out of it) and then one day she came to us and said, "I want to go on the potty." End of story she was potty-trained. My DS on the other hand... Let's just say I was worried he would be the only one in Preschool in a pullup. He just didn't care to take the time to stop whatever he was doing and go to the bathroom. Good luck! It sounds like you are doing the right things.