Funny, I just found out this weekend that my parents wanted me out of nappies so that they didn't have two in nappies as there is an 18 month age gap with us. I have suffered from a weak bladder and kidney problems all my life. Coincidence...? The strange thing is though that until recently babies were potty trained after their birthday because parents couldn't keep up with the washing before machines. Tink knows when she is going to wee because she won't sit or lie down when she does, so I am going to start introducing a potty into the room and following a BLW type principe on it.