I am very frustrated about my 4 1/2 year old. He was going wee wee in the potty at 2 1/2 but was a late start at poo in the potty. He has been fine for the last 7-8 months but for the last month every time he needs to go poo, he isn't making it to the potty in time. Each time is an accident. He is in preschool and will not be able to go again this year if he doesn't stop doing this. I told him he has to wear pull ups until he stops having accidents and he is not too happy abount this. I hope it will stop soon. Any advice?