aside with practice,
don't forget to warmup.
good warmup routines with hours of proper scaling works wonders and give fastest results.
don't forget your metronome, and space out your practice timings.
rule of the thumb,
start slow, attempt fast. then fall back to the middle.
i.e
if you start at 80bpm, play it till it becomes easy. then attempt 100bpm.
if its still too hard, drop to 90bpm. you should be fine at there.