Practice for speed

Hello lovely people!
Lately i had been practicing Tsugaru Jongarabushi (Kyū setsu) somehow i had incremented my tempo “somehow” so i wanted to know if someone know any practice or technique to increment my speed?

Hi! A very efficient way to practice speed is the use of a metronome. It helps to keep the structure of the song complete while you’re able to gradually increase the bpm.
A particular way I practice getting faster is setting a speed that is still playable, but also challenging. Then I will play a few measures repeatedly, alternating between the metronom and then halftime. That’s a good way to learn precision in both fast and slow speeds and helps to build the muscle memory needed!