As your shoulder improves it now becomes important to do exercises that require some active movement of the shoulder. The simplest of these are where you use the other arm/shoulder to assist in the movement. Lying supine/on your back, knees bent to take pressure off your lower back, use your other arm to assist your affected side into flexion. I would recommend between 10-20 of these 2-5 times per day depending on severity and irritability.