"Rotator cuff" surgery is variable bc of the complexity of the joint and the what is actually torn in there. Because you have several tendons (supraspinatus, infraspinatus, biceps, teres minor) that comprise the RC, it depends on which are damaged and the amount of scar tissue, bone spurring, that has occurred since the tears. Also, you have a bone called the acromion that can get involved and create problems with a bursa sac that frequently gets damaged when other parts of the RC anatomy start fritzing out. The standard surgery for a RC repair is to go in via arthroscopy and clean out the inflammation, reduce the bone spurs, shave down the acromion and distal tip of the clavicle, and finally repair the tendons.
They shave down the bones to give the RC capsule more room to avoid future pain and impingement. This is one of the most painful parts of immediate recovery, but it's valuable. Turns out, your bones don't like being shaved on.
The tendons can also be tightened in this process, which is a net benefit to some people (think Tommy John in the elbow). If you have damage to the supraspinatus tendon, your overall range of motion above 90 degrees is going to be limited permanently in most cases, but you'll likely get pain relief. That's just the reality of damage to that tendon. The others can be repaired pretty well to reduce strength and regain ROM. The labrum injury is far less surgically significant, because it is just a cartilaginous gasket that lubricates the humerus from the glenoid and AC joint, and is usually a much easier repair and recovery.
I agree with the posters who tell you to follow your PT recommendations and listen to your body. Hurrying back from tendon repair usually justs results in additional tendon damage and tendinosis/itis.
Also, you should ask your doctor about which of the specific parts of the anatomy are torn in there so that you can research the recoveries on each. This will give you the information that you need to help guide your PT person, because they have a tendency to treat all "RC" recovery as the same without specifics. Good luck!