How can I practice playing in 6/8 time signature with a dotted quarter note metronome?

To practice playing in 6/8 time signature with a dotted quarter note metronome, set the metronome to a tempo where each click represents a dotted quarter note. Play your music in 6/8 time, making sure to align your notes with the metronome clicks. This will help you develop a strong sense of rhythm and timing in 6/8 time signature.