Alternate Picking and String Skipping
Added 2020-05-05 15:01:00 +0000 UTCI did this with one of my students a while ago. A good way to get more comfortable with changing the strings while alternate picking is the exercise in the attachment.
I basically use the 3-note-per-string scale and play 16th notes in 6ths. Try to focus on the little parts and string changes which are hard to do for you personally.
It makes sense to practice that in many different ways, so feel free to do the same exercise with other scales and other intervals as well!