DD is 4.5 years old and has a very rare genetic condition. She is deaf and has a hearing aid (currently being assessed for implants), she has mild global developmental delay and mild learning disability. I think she may also have some sensory processing issues. She said she wanted to wear pants, so she has been wearing pants all week but she refuses to sit on the potty when I ask her to and when she wants to sit on the potty she doesn't do anything in it. She doesn't even seem to notice when she is wet! Do I persevere or go back to nappies?