Hemiola. 120 BPM
This video will help you feel the beat as the meter changes back and forth between 6/8 and 3/4.
Follow the blue baton. Tap/play the dotted quarter notes in 6/8 and the quarter notes in 3/4.
Or, play a passage with the metronome from one of your pieces that switches back and forth from 6/8 to 3/4.