I kept DD up until 10:30 yesterday, it wasn't that hard because I broke up her morning with a walk and breakfast out. Afternoon she was fine, I think again because I took her out to break up the time a little. Currently her morning nap (no matter what time she goes down) seems to be an hour and 20-40 so hopefully if I persist she will gradually sleep longer and / or I can put her down a little later again so she is not sleeping through lunch.

Thank you so much team BB!