ok, so Spock has a bit of nappy free tim after her bath. and always does a wee, so ive bought her a potty and thought we might start trying to catch that wee and go fron there. but we have trouble getting her to stay on. she obviously doesn't know what it is for, and we sit and keep her distracted while she sits, if we leave her to just do her own thing she jumps off. is it just a matter of perseverance?