Knee feeling loose

I have a grade 2 ACL tear (30 percent tear of my right acl) and it's been 5 months post injury. My doctor has said that I don't need surgery because my muscles are strong. I am able to do weighted Bulgarian split squats, jump squats etc and fully bend the knee with some moderate pain (no pain if I'm all warmed up). But my knee stills feels somewhat "loose" whenever I walk. Does it ever get better? Will strength training and plyometric help make my knee feel tight again or is surgery the only option?