Lee, that's when the Q's were laying good (July) very few new. Egg's that i seen now.
Okay... that was an excellent brood pattern Mikey so by now those bees are your young
winterers, those cells should be partly backfilled with honey and some pollen, the pollen
from late foraging.
So with your thought on "weak" - which I read as lower numbers for the infrastructure
you've given them - you could make a call safely around bringing the woodware back to
frames covered with bees and loaded with stores, plus maybe two capped frames.
Dividers in if necessary. Seeing as how you are keen on the fondant option it would be wise
to add a 70mm spacer with an observation port to check the fondant consumption, occassionly.
Assuming your roofs are sufficiently insulated to prevent condensation.
All as a way of sorting out a future winter preparation as a set method, allowing always for
the worst weather scenario.
Hope that all helps... cheers
Bill