Hi,
As examples
Scales - Pick a scale practise it in three dif shapes (first finger, second and little finger lead) each in 3 positions on the neck. Great if you can have a loop of a chord strumming in the background to develop your ear
Arpeggio - play arpeggio thru a major scale say Cmaj Dmin Emin Fmaj G7 Am Bdim in 3 positions on neck.
Techniques - Depends on where your technique is. I am working on hammer on/ pull off three fingers and cross string descending speeds. Pick a topic, clean picking, muting, string skipping, dynamics whatever, set the metro and work away thru a scale or something making that the best you can
Timing - Sensible speed metronome, hit the whole, half quarter, eight, sixteenth, swing, triplet, off beats(2+4). Remember slow and really accurate. Try sixteenths missing one of the parts, 1 e + a missing the e for 4 bars then swap missing the a for 4, swap missing the + etc
Make a quick note of what you have done, inc metro speeds etc and you will know that you can set the bar a bit higher when ready. I forget what have done and so prob would revisit and so stand still.
Hope that helpful
Eggy