Ah, does sound like teeth are the main issue then.
At this age I prob wouldn't bother with a CN (unless lo is ill and really sleepy) but do slightly EBT instead, like you're doing.
As they got older I found with both my los it would usually take them longer to nod off at BT than nap time. It was like at BT they needed more time to process the day first, but for naps they could just switch off.
I'd go with the flow for a bit whilst she's teething, but once she's over that and (hopefully!) taking longer naps again, you prob need to push that A time to BT to avoid getting BT resistance.
Hth x
