Keep the goal sheets as a record of your study efficiency. Try setting slightly higher goals on successive evenings. Don't try to make fantastic increases in rate. Just push the goal up a bit at a time. Flip through your reading or assignment quickly before you go on to something else.
Few students realize that a short, immediate review is their very best study time investment.
This one step may take a tiny bit more time so it really can't be considered an instant study skill. However, you will find that the very few minutes you take flipping through an assignment before you start something new will aid you tremendously in retaining the material for future use. Research has indicated that a brief review at the end of a study assignment is much more efficient than the same amount of time spent in review later on. The immediate review is terribly important. Stop at the end of each page and count to ten slowly when you are reading.