How would one go about practicing this first page?
Also, how would I even approach an octave tril?
What measure is this in?I haven't played much of Moonlight, but the opening of movement three is a lot easier than it looks. It's just ascending sequences of arpeggiated chords played very quickly. Practicing normally is appropriate.
You only trill the top note. And you can release the lower note as soon as you've played it.
The same way as you'd practice anything else. What issues do you have with the first page?
Can you clarify a bit more what you mean by brute force practice? You shouldn't be forcing anything when practicing, ideally.
What I mean is note by note
Still not sure what you mean by that. Can you explain? What would be some other ways of practicing?