Wow....put them down at 8:30 and they played for a bit then went to sleep on their own. I heard c wake up after half an hour, chat to herself for a bit and go back to sleep! I woke them after 50 minutes and although with one thing and another they had nearly 4 hours A before this nap they did the same, and I heard c wake up and go back to sleep after 20 minutes. She didn't even cry - just said "dadada" for a but, blew some bubbles and went back to sleep. And no dummy!!! And they've been brilliant today - playing by themselves, smiling at people who looked in the pram (usually that makes them go mental!!), C has been pulling herself up on the furniture....just a great day (so far!). I even left them in the room on their own for 5 mins earlier and they didn't cry!!
I know it could all go wrong at any moment....but for now, thank you all so much!!!!