Similar here, it dragged on forever. If possible, I would have the plaster done before moving in. I then cut slots into some windows after the base plaster, because there's at least a 2-week break between base and top plaster. And then a few more days before painting. In case of doubt, the plasterers can just roughly tape a foil over the slot
I'm just curious how it will continue, because now we're heading into cold outside temperatures and if it doesn't progress, it will eventually get annoying. I really don't want to sit here over Christmas with taped windows and partly closed shutters. If necessary, I'll just take them down, they can complain if they want. No one told me before that it would drag on for months. Especially since we also have some kind of heavy-duty cable hanging out of the basement window for the machine and I therefore can't close it. But it's inside our thermal envelope, and if it gets cold now, I'll just be heating out the window. Or currently, the basement is "cold," but that can't go on much longer because a fabric shelf already got moldy there. Not cool. I'll probably have to annoy our site manager about it again when I see him.