You should first go for the conservative treatment which will give you strength and decrease the pain. Generally this kind of tear get repaired by Physiotherapy only. There are no side effects or risk of this treatment.
Next Steps
Go to a physiotherapist.. Ultrasonic therapy +IFT +Heating therapy +some strengthening exercises will be helpful for sure.
Health Tips
At home.. Rest +hot water fomentation +pain killer gel +no side lying on same shoulder +no cold exposure +no manual exertions +no weight lifting +no jerks to the shoulder.