The line about transferring Palpatine’s spirit has already been moved to the opening sequence in address to Kylo Ren. That should be enough to imply he could change his mind and select a new target, in principle.

I’m not saying it’s great but to me it would’ve had a lot fewer people walking out of the movie genuinely confused about Palpatine’s plans throughout the plot.

What would be sublime is a line to add to the Palpatine-Pryde conversation to further imply this. At present he does say Leia threw a monkey wrench into his plans and he intends for Rey to come to Exegol…
somehow.

Actually… in this new streamlined approach, why the heck would he expect her to come there?

Anyway, some line about “Now I’ll focus on her” or something would help further. It might not need to be a slam dunk match if hologram processing is applied and perhaps further applied to the entire scene to get it to fit in.