Be sure and start light enough to get your @$$ deep in the bottom of that squat. However, if you have a good idea of where your 1RM is on these, get a good warm up and go through the sets at 80% plus, using consistent form as your guide to the weights.
Overhead squat 1-1-1-1-1 reps
Front squat 1-1-1-1-1 reps
Back squat 1-1-1-1-1 reps
Try to increase the load on each of the fifteen sets.
For your consideration, regarding nutrition and changing our eating patterns: here's a good article about modifying our behavior. See where you are in regard to how these "stages of change" apply to your personal nutrition and training efforts. If you find yourself in the comtemplation phase choose an attainable goal, just one to start. You may be pleasantly surprised.