Hi cashewnut, just to share. Initially, my gal also had the same problem, i.e. she only pooed in diaper. After a while, I decided that this shldn't go on and refused to put on diaper for her anymore. However, I wld carry her to the toilet and lift her up over the bowl every time she indicated she wanted to poo. She struggled and pooed only a little initially. After a few times, she seemed to get it and I slowly relaxed to let her sit down. Now, she can poo in the toilet by herself. Hope this helps.