I'd load a Slug into the Viewer, set it for 2:00 and use the Next Edit keyboard shortcut and Insert Edit shortcut.
Tap-Tap, Tap-Tap. Get into a rhythm, and it'll go pretty fast.
I'd also put the slug on it's own track, so I can delete it and just have the spaces.
That is, this is what I'd do if someone didn't have a better idea.
deb