Thanks Mariellamom.
The paediatrician visit went well - she is all normal (12kg and 81cm at 13.5 months); he confirmed she has involuntary breath holding spells, which are basically in a time of stress or pain she will hold her breath, kind of like crying so hard she doesn't breathe. Thankfully she isn't much of a crier and has only had a few of these spells. The best part of this confirmed diagnosis is she will grow out of it in time, and they aren't harming her.
Back to the sleep talk, the midday nap is about 1.5 hrs the last couple of days. I just put her down now, wish me luck for a long one!

Ginger - wow that looks like it took a long time

I guess we transitioned a little more quickly than that so will be interesting to see how long it takes here. We have been on one nap now for about two weeks. That late afternoon CN just doesn't happen so gave up!

I'm so pleased your LO is so happy and well rested too. Love it!
I would say I am starting to enjoy the benefits of this one nap per day, including being able to take her to morning play groups and such. Most of these things start at 10 or 10.30 am here and it really wasn't worth it while she was on 2x naps a day. But to be fair I'm not sure should would have enjoyed them 2-3 months ago as she does now. All perfect timing!