Two ways really hun. You could stick with the set nap and BT ie the 11am nap and 5.30 BT, but I think you'd have to give it a good while for her,to get used to it. Perhaps 2 weeks or so? Then You could look at shifting the day like we do with daylight savings, so pushing the nap and BT back by 15mins every 3 days or so. Again, that might take another week or so to get to the times you want.
Otherwise, if you feel she could go a bit longer this morning after the 12hr night, you could try and push to 11.30 for the nap then if the nap is decent, 6pm BT.
The second option of the CN. I used to do the pm CN during the transition, however further down it, you are more than likely going to get a pm CN refusal and therefore too lomg of an A to BT (even with an EBT) and probably make your emw worse. That's the problem there really. For us, when she used to wake at 5.30 and I wanted to shift the day on, I did what I said earlier so one CN early in the am to get her as close to her usual one nap time as possible and hope for a decent nap length. For me, the idea that the CN used to make up for the emw, then I could push the A time back to her normal nap time to be consistent.
Wrt the w2s. I love it, made my life much better when we were dealing with short naps. However I've never used it for emw. It's a really difficult one to get right as they're coming into light sleep early in the morning and there is more of a chance she'll wake up at that time completely. That being said, many have found it really useful for dealing with emw, but for us it was either a sign the nap needed to be pushed out or teething so no amount of w2s was going to work. You could try and see though but only when you get to a later BT as after 11hrs sleep, I'd doubt it'll help her sleep longer.
