If Luke already waited 6-12 months to go back to Yoda, what difference would it make if he went back one week or the next? And doesn’t it make just as much sense for him to have resolved the mission he set himself on before returning to Yoda? “I totally failed to save my friends, and still haven’t saved them, so I’m sure you’re really disappointed in me. Oh, you’re dead.”
I have no idea where this 6-12 months came from.
I think I read 6 month in the book, but Im not sure. It was like 30 years ago.
But it just does not make any sense.
I think current canon says 6 months between ESB and ROTJ.