Knee cap dislocation acl. I do now?.

I have dislocated my knee cap while dancing. This was before 4 months. The first two months I wore a knee immobilizer. The next two months I went through physiotherapy to regain my range of motion. I have shifted from wearing a knee immobilizer to ROM knee brace. I slowly progressed from 45° to 120°of bending my knee .I consulted a doctor and he claimed that i had an acl tear by analyzing the MRI scan. He told me to wear an Rom knee brace and walk with the help of a single cruch. It has been a month since then. I am not able to understand wether I need to undergo a surgery. My doctor even suggested me that, since my range of motion is 120° you may not need a surgery. What should I do now?. I really want to get back to sporting activity. How should I proceed.? Thanks for your answer!