Why do you want to cut the Lady Proxima scene?
Not sure what it really adds, and it mostly slows down the prologue which is too long in general.
Also, there is no music in the alternate version of Qi’ra’s intro, so maybe you could look at trying to use that if you can’t get the current version to work.
Hmm, maybe could work if you could cut out Han talking about “Mother Proxima.” Unfortunately the scene just isn’t as good in many ways, plus there’s still the music at the start of the other scene to worry about.