This is unrelated to the topic but I saw several posts including info that your child is not potty trained. I bought several books and none were helpful.
When my son was about to turn 4 he needed to be potty trained to attend his preschool. If I put underwear on him, he would hold it for hours like 8 plus. Since he is such a visual learner. I asked my sister to video my nephew (6 months younger than my son) going potty. (I know that may sound strange, but video helps so much with anything I want to teach him that I knew this would help too, plus you can just delete right off the camera once he has seen it a couple times).
My son watched it once and went right to the toilet and stood there ready to go! He didn't go but it was a step in the right direction. The next step was that my husband and I actually had to force him to stand up in the bathroom because he would have to go so badly and he would just sit on the floor to try to get rid of the sensation. He had great control. He cried but we forced him to stand. He couldn't hold it anymore and he went in the potty and has ever since.
Over the past year he only had one accident at school. As a special positive reinforcer, we placed a bubble machine on the back of the toilet and turned it on for a couple minutes each time he went potty. I still remind him but he usually goes on his own. Going number #2 is still a little bit of a challenge, reminding him to go but he has no problem sitting on the potty. I know it was totally off the topic but I've shared this with others and it has helped. Hope no one minds. ... View related article.