The procedure is the same as when installing a new or replacement IP.
Set the crankshaft at desired start-of-delivery position, remove IP, align IP index marks, reinstall IP in center of adjustment range. Then adjust SOD.

You could probably get away with just pulling the IP out, rotating it (the entire pump, not the shaft only) in the retard direction, then reinstalling it. That will give you the needed range of movement in the "advance" direction.