DS is very nearly 3. He's not shown any interest in learning to use the potty/toilet apart from the odd wee in the potty at home, and one isolated wee in the toilet at nursery. All fine - we're not rushing him, he's got a new baby sister and we've got a house move on the horizon so we're keen not to add another layer of stress to his life at the moment.
However - he doesn't tell us/nursery when he's done a poop, meaning he's now got a sore bum. We check his nappy regularly as do nursery but it's often not until we see him tugging it or looking a bit glassy-eyed and distant that we realise, he'll have done a huge poo in his nappy but not told us. I think it's basically a chore for him to stop what he's doing and lie still for 30 seconds to have a fresh nappy on, so he puts it off as long as he can.
Does anyone have any ideas how we can encourage him to let us know? We gently explain every time it happens to let one of us know, and that it's giving him a sore bum, but he always looks away, starts squealing or starts talking about something else.