How Long Would It Take to Move One Tooth?

I started with Invisalign braces, uppers are now perfect but today my ortho put metal braces on lower teeth to move this one tooth. It needs a minor correction as it overlaps the tooth next to it. He put it on the other teeth to help anchor it. About how long it would take for the tooth to be moved in the right position, all it needs to do is be rotated a bit and then pushed back a bit. I see my ortho in a month from now! How long do you think this adjustment will take? Can't wait to be done!