Thanks for all of the info although a bit depressing. Question: after the six weeks, assuming I stay off it and don't screw it up, can I mess it up if I try to do too much?
Freak things can always happen and every activity carries risk. Biggest concern up until the 14 week mark is trying to avoid a loaded rotational moment at the knee (twisting while leg is planted) - really not likely to happen but just limits some exercises you can do in PT. I’ve had one re-tear post op but they slipped on ice (others have just straight up been non-compliant jackwaggons).
I’m not going to lie, the 1st 6 weeks are mentally tough. If you find a PT you gel with things will go great. Treat the first 6 weeks like training for a marathon - you’re building your base mileage for a solid foundation. Get your lateral hips and quads as ripped and tolerant to high, endurance-based reps. Learn to love blood flow restriction training. It’s a grind but find the joy in rebuilding and seeing progress. You REALLY have no need to do more than 2x week with formal PT (unless motion is tough). I have a lot of mine, if things look good, go 1x/wk weeks 3-6.
I work with a major university-based hospital system but we have about 90% of our athletes fully back to contact sport and activities post-RR meniscus repair by 22-24 weeks.