Irishmam - APOP means accidental parenting on purpose, e.g. Rocking or taking baby for a walk to get them to sleep. You might do it to force a nap they might otherwise not take to prevent overtiredness.
Clairey - I don't know the answer to this, we're still occasionally doing an APOP CN as my DD also does a maximum of 1.5 hour naps. I've never had a 2 hour one so no idea how that'd be, sounds like a dream ;-) I don't let E have a CN everyday as I have been able to resettle her sometimes after an early wake up. But the early BT was great for a few days. Don't lose heart, we'll get there :-) xx