Hi Clare,
I'm also keeping my Ae Ae very, very dry and so far do not have any problems. It has a place at a window facing south-east and is getting morning sun (rarely available these days :-))
When I took it inside at the end of October growth slowed, but the last leaf just emerged a week ago and came very, very quick
But this morning the sun was shining and I took a photo:
Dont remind me to clean the windows :-)