The bedding has a special sheet to which the pillow is attached and the duvet set zips up the side to stop LO from falling out and to prevnt the bedding from being kicked off, so you could take the sides down and simultaneously stop the gro bag and switch to the gro bedding, making a big deal about her being a big girl now

Could work as it sounds as though she is feeling like a grown up girl, wanting to walk upstairs and be out of the bag
WRT her routine, I think if you try for the cat nap every day, and start with 30 mins, possibly dropping to 20 mins in the near future that a 12 hour day could be achievable. I think you would need to decide on a late cat nap and stick with it for a few days if you can, then see where you're at. At the moment each day has been different with varied amounts of sleep, so I think it will take a little time to know whether she can have the cat nap and an 8 o clock BT YK

Typically the amount of sleep a LO is able to achieve drops unavoidably during the 1-0 process, but it may be this plan could help her the most.
BTW I also couldn't stand to do cat naps in the house and DS did the same WRT to cot refusal so went this route also for a while

. I did the cat nap from 3 to 3.20/30 and WU time in the morning varied.
What do you think

x.