Here's another idea. (Yeah, I have ideas. Let me know if it's too many).

The scene between Yoda and Luke starts with Yoda saying "That face you make, look I so old to your eyes." "No," says Luke, "Of course not." "I do... yes I do... sick have I become... old and weak... When 900 years old you reach, look as good you will not." These lines make it feel like Luke just arrived and Yoda's feeling self-conscious. This undermines part of the reason for moving the scene up front.

I recommend using as much of this footage as possible while cutting out a few of the lines. If you remove all the lines from "That face you make, look so old to your eyes..." to "Yes I do..." you could still keep a lot of the quiet moments and let the scene start to set itself as Yoda tends the fire and finally says "Sick have I become... old and weak... etc."

That seems a more natural place to start the scene if it's going to have the impression that Luke's been there a while.

Just a thought.