I don't really have a guide but
1) remover quiver
2) Cut the black strap connected to holster since it's glued to the jacket of the suit, I'd say cut it right under the suit so then when it comes time to reconnect it, it's easier.
3) remove boots and pull pants off
4) unzip the zipper all the way down, snip off the black thread at the bottom of the zipper pull one side open. There's no easy way or better way to describe this step, you gotta see it know what I mean, but essentially, you want to remove the zipper on one side without damaging the suit too much. Try heating the zipper head up with a blowdryer and pry it open a bit to give it a bit more room? I also cut the bottom of the zipper in case they were glued. So what i'm getting at is, there's no definitive way to do this, but your goal is to remove the zipper.
5) change body and put everything back on.
6) superglue holster straps back under the jacket.