My son is 4 years old and I still have problems with potty time, there is no problem with number 1, but there is no way that he goes to potty for number 2, he stills asks for a diaper to do number 2 and he hides behind the bedroom curtain or wherever he can hide if he is not at home, I have talked to him telling that mom and dad goes to the potty for number 2 and he can do that too, and there is no way, for two times I told him that there is no diaper and that he has to use the potty, and I have not done that anymore because he holded it for almost the hole day and that is not good either, he starts school in a few months and I can't get him to use the potty for number 2, what can I do? Please help?