DD2 (22 months) is starting to show interest in the toilet, so I brought up the small Baby Bjorn Smart Potty from the basement. DD1 was sitting on it just for play, and I asked her if it was comfortable and she said no. DD1 is taller than DD2 but they are 10 lb or less different in weight. I'm wondering if I should look into something a little larger and more comfortable. Any recommendations?