It’s more of a writing-stage set of ideas than something that could be accomplished in an edit, I think. The whole issue with Rey being tempted by the Dark Side is that there’s no temptation, especially after using dark powers seemed to kill Chewie.
A potential direction would be to lean on the idea that Rey is a feral Force user who can’t distinguish what her power actually comes from. In that case when she confronts Sheev it is the first time her power is being put to the test, so it isn’t if she can defeat him but whether she can do it using only the light side that counts.