Slowed down due to the floor plate change?
By my count those table forms at the top are for the roof of the office portion of the tower which I believe would be a transfer slab.
I hadn't paid much attention to this tower and didn't see that this isn't a typical residential over commercial tower but more of a residential beside commercial tower. Beside the 13 office floors there are 19 or so residential floors, that complexity would justify how slow this has been going up.
This shows the residential floor plates beside and above the office portion.

Image from Appia Developments