My head cannon is that ESB is accidentally more accurate than the rest of Star Wars, Nolan’s Interstellar-style. Time might pass differently on the surface of different planets versus space?
You’re exactly right. I would go as far to say that it isn’t even accidental.
I wouldn’t go with an Interstellar explanation with it. Maybe Dagobah has a weird relationship to the Force that drives the flow of time in a different manner than the rest of the universe?