95% of the time, when I get the camera stuck between the door parts, it stays like that for about 5 sec (not nearly enough for my run), after which the door completely shuts and the camera is pushed out (usually behind the door). I'm following the method in this tutorial as closely as possible:

Is there a position that is bound to work at least most of the time, where the camera gets stuck for at least 20 sec? Any other tips perhaps?

is the door getting stuck on the skinny part (the part that connects to the wall) or the actual camera part? I find that it's easier to make the shot into the next room when the door is stuck on the wide part, but it will stay stuck open much longer if it is stuck on the skinny part. I heard that you're doing a blindfolded run, so idk which one will be easier, but you could just step on the button very quickly, so it gets stuck on the skinny part.

Cool, that's actually what I was doing wrong - the camera part was between the shutters, so probably due to its round shape it squeezed out rather quickly. Thanks! After a bit of testing it seems the exact setup doesn't matter too much for the rest, though it's always prone to random failure to some degree.