Hi. Not really a potty training issue but wasn't sure where else to post. I need advice and help please. My DS is 5 but will not use the toilet upstairs without me or his dad being upstairs with him. He is fine at school and was fine when we went to a caravan for the weekend. When I asked what's different he said it's because we are on the same level. I have tried reward charts, treats and incentives but nothing will work. It's becoming tiring as I have to stop what I'm doing for example cooking as he will stand their and hold himself otherwise. Any advice would be welcomed. For context if we moved all his toys upstairs into his room he wouldn't go up there and play either.