I tore mine 8th grade winter snowboarding but didn't do anything for it until that summer when I went to the doc. He gave me a cortizone shot to see if it would help. It didn't. At that point I didn't want to do the surgery option because football season was coming up. I ended up not doing anything for it until my Junior year when I tore my acl and more of the meniscus. So that's when I had it cleaned up. Fast forward a year, and I tear the mcl, bunch of cartiledge, and more of the meniscus in football lol. Its been a year and a half since then, I never did anything to fix it. Its never felt the same and swells a little after any kind of activity. Never kept me from being able to do anything except squat all the way down.
I was told if it was just meniscus, its 4-6 weeks until you feel 100%
I know that's more than just a meniscus tear but that's my story haha