Hi, I need some help. I'm going to a competition in February, it's a multiple instrument youth competition, I'm of course entering in the piano category. I'm playing Beethoven op. 2/1 first movement, Brahms intermezzo op. 117/1, Bach prelude and fugue in b flat major bwv. 866, and Bartok alegro bárbaro.
So I'm having problems with the Beethoven, a piece that I picked up again for this competition. Those little sixteenth triplets at the beginning are really causing problems

, even though when I first learned the piece I got them fine. It's come to a point where I get to those sets, you know, these sets of ca. five of those sixteenth throughout the piece, and the first one is completely off rhythm, but the rest are good. This is making be really nervous about the competition. Any tips, both for nervousness and for those sixteenths?
Thanks