I have a 21 month old, been doing.ec since 6 months, wearing a nappy. She goes through phases of being dry and/or clean then phases of doing everything in potty. uses the potty at home but refuses with childminder. Sat on potty once with childminder. Gone nappy less this afternoon after a big poo as she better with potty wees than poos as she now has a few weeks off from the childminder and she wants to wear pants. Read a couple of books, one had a questionnaire which I did and it said child could be ready or could wait, as in 3/4 ready. She's quite talkative although I have mistaken peckaboo for big poo.