I have some ideas:

Remove Snoke altogether from VII. Kylo is the leader of the First Order. Insert the scenes of Kylo meeting Sidious into VII.
The Battle of Crait takes place around the exact same time Rey faces Darth Sidious. We remove Ben from the final battle with Sidious (digitally and cutting-wise) since he’s at Crait and facing Luke’s projection. When Luke reveals that he will not be the last Jedi, we cut to a wounded Rey hearing the voices of Anakin, Obi-Wan, Yoda, and Ahsoka (we remove Mace’s voice, since he never learned how to become a Force ghost), and getting up as she confronts Sidious one more time. When Luke is revealed to be a projection, after Kylo says “NOOO!!!”, we cut to Rey fighting Sidious as she uses the lightsabers to reflect his Force lightning, causing him to disintegrate once and for all.
Luke lives and Rey dies.