Agree - def go for EBT - even 6pm if she's struggling.
I agree OT atm & think yesterday the 5.5hrs was too much to BT after she'd already done almost 6hrs A to naptime. All the NW's & the shorter night & of course the nap today are surefire signs. We had this with O the other week when we pushed his nap out - he just couldn't cope with the long day. Since then we've stuck at 5.5hrs in the AM & capped the nap at 2hrs. For the PM, we started off with 5.5hrs, but he woke quite a few times overnight & seemed tired the next day so we actually shortened it to 5hrs & he's done that for the last week and a half & is faring much better. Before Christmas I actually thought he needed more A time to BT than 5hrs, but it seems that the longer he has in the morning the less he needs before bed IYSWIM?
HTH.x