Yes, sorry I didn’t understand correct.
You could definitely use this exercise to play over some chord progressions.
With backup you have a lot of options (which can make it difficult when you’re starting out) but you can either play chords along with the jam or just play notes or licks on top of the chords.
This would be an example of playing notes on top of chords and you’re correct it might be a good option if you’re struggling to get to the chord shapes at faster tempos.
You could also use this idea as a way to connect two chord shapes together with a series of notes. So maybe you’re playing down the neck and you use this exercise as a way to get higher up the neck to a C or D chord for example.
If you play a note that doesn’t sound correct with the chord they’re playing just move your finger up or down one fret and you should quickly find a correct note that works with the chord.
If you have any more questions let me know.