My experience was also that breaking up the scar tissue was much the worst thing. I was on my rollers on the 3rd day. I rode easy on them for a few days, then went out on the road and rode OK, but not pushing it. Normal use riding, hiking, stretching, and weights gradually broke up the scar tissue over a period of about a year. It was probably about a year before I was totally back to where I had been, with full range of motion and strength, can't tell the difference between knees, etc.

But every meniscus repair is going to be a little different, depending on the nature and severity of the tear, and of course on the surgeon.