Lazy Right Elbow
I have often noticed a discrepancy between the timing of the placement of my fingers and the changing of the bow on the strings, and I am fairly certain, when it happens, it is due to my right elbow being late for the string change.
I think of it as my arm being lazy, and my teacher has added that I am too tense in my right shoulder.
So my question is: what can I do to get my elbow to follow my hand better? If this is in fact the issue. Or any thoughts regarding the tension/lateness?
I try to slow it down and practice in front of a mirror, but as soon as those elements are gone, I fall back into the lazy elbow habit.
Edit: I should perhaps add that I am practicing the Air Varié No. 5 by Charles Dancla, and it is the first variation in which I notice the issue.
Trying doing the converse of lazy and anticipate the elbow movement in advance of the actual string change. That will give you a feel of it and try to make it a habit.
The frustrating solution is:
Practicing in goups and rhythms forces the bow and left hand to match timing.