shooting today and went into a darker room to change film, forgot to rewind the film before slightly cracking open the camera (half an inch more or less) then realized my mistake and quickly shut it again, but after that the film won't rewind and is stuck at photo 1 for some reason. What might be the issue and what to do?
Unlike 35mm, you don't rewind 120 film. Keep advancing the film until it is fully loaded onto the take-up spool. Then take out the exposed film with the take-up spool. The old spool becomes your new take-up spool.
If you're not sure and just want to play it safe, you can use a dark room or changing bag. If you don't have access to a dark room, you could try crawling under a comforter in a closet in a hallway with no windows at night.
See YouTube: Loading and Unloading 120 Roll Medium Format Film