06′ 400 outlander

I was trying to remove my rear hitch to install a new one and the rear differential moved enough that the drive shaft slipped out enough that the splines are no longer engaged. I have the top through bolt in the differential but I can’t get the differential move forward and the splines on the drive shaft back into the transmission.

Can someone advise me on a procedure to get the differential in place and the drive shaft back in place at the same time? The differential does not move freely in the frame with the bolts remove so I can’t tell how to get the splines lined up.