You are not at all sure whether there is a limitation of movement.
Proving a limitation of movement is of the utmost importance. The existence of a limitation points to another cause than a simple tendinitis. A tendinitis namely never leads to a limitation of the passive movements.
Therefore, only stop the passive movement when you obtain an obvious endfeel . Don't stop the movement when the patient indicates pain, but look for a clear objective stop.
You are not sure whether there is a limitation of the elevation
You are not sure whether there is a limitation of the lateral rotation
You are not sure whether there is a limitation of the medial rotation