I'm practicing this piece and I'm having trouble playing the 75th bar evenly at 125 bpm. The problem occurs on the right hand on the finger change at D♭. I'm playing this bar (right hand) 1235 1235 1235 and changing from pinky to thumb at D♭(5) D♭(1). I can play it comfortably below 100 bpm, but the song is aiming for 125 bpm.
Can you tell me what exercises or techniques I should practice to improve fluidity at faster tempos?