in the left hand, I don't even get the fingerings in my book. when you do the octave B, stay there, and then use 1 and 2 on g and f# and 5 back on b. from that b, you go to the c natural. Observe where the last beat in that measure, left hand, same pattern occurs. From that now A on last 16th note, it goes to the b. .
in the right hand, the pattern does not start on that first beat of the measure. it starts on the second beat, where the left hand does the 16th notes. in right hand, the melody in 16th notes is irrelevant. follow the bottom note. you start on b. then go up to e(remember that and the notes that are above it). then. from the e, you go below the note the pattern started on, below the b is the a in the right hand, and the 16th notes that accompany the bottom note are also descending, below the 16th notes of where that pattern starting with the b started. after that, you go up just below the e and it's 16th notes, then back down, but below the a, then back up but below the d and it's 16th notes. etc
and the part after that, with the diminished patterns.
Trick to tricky music is knowing where you are and what you are playing, and what to play next.
learn technical music in this manner.