Sliding exercises

Are there any exercises for sliding your fingers up and down the neck when changing between notes or chords. The hammer on flick off exercises great and really helped actually, all the exercises do, I couldn’t find any exercises on sliding. Not using a slide but sliding my fingers. Any recommendations would be great thank you.

Justin recently published a new lesson in grade 3 module 20 The lifted Barr trick
The Lifted Barre Trick | JustinGuitar.com

He shows an exercise where you slide up and down the neck