I don’t know how that restructure is possible. It’d front load the film with almost solely Luke/Rey scenes (there’s only one solo Kylo scene that would work, and the Kylo/Rey scenes would have a continuity issue with his face stitches), which in turn would make the latter parts feel light on those characters.
I’d also kill the propulsive pacing/tension/suspense of the Resistance’s plight that hangs over the film (and adds the urgency to the Rey/Luke stuff).