Quick question. My 4 year old is potty trained, sitting down. When should I and how do I go about incorporating standing into it? My friend was making fun of me because I have not yet but he just trained not long ago. Does the cheerios thing really work? How did you do it? He doesn't have a man in his life and unsure of how to start. I bought him a step stool, should I actually wait until he can stand and reach on his own?