Great report
@katdog! There definitely is something positive that occurs around the end of week 3! I had to wait another whole week for some more obvious improvement, but I got a big, surprising positive change this past Saturday night. I don't look for things to improve on any sort of schedule though because I know this isn't going to be a smooth, linear progression. In fact, as I type this right now, I am feeling all sorts of oddball, new and irritating sensations in my thigh, hah! Maybe something is waking up in there? Either that or my leg has been invaded by prickly aliens. Regardless, I am still moving much more naturally with less discomfort since Saturday night; I'll take it!
I understand what you are saying about treading that fine line between enough and too much. activity, specifically walking. Today, while at PT, I told him about my 15 minute, double crutch walk outdoors yesterday. He said 15 minutes was ideal for me right now and I agree because I had no adverse affects and some positive ones. Of course, your mileage and minutes may vary. I'd just say to err on the side of caution to avoid joining the ODIC.
Congratulations on achieving side-sleeping! It's such a big milestone.

Like you, I am not a natural back-sleeper, so despite some discomfort on the side, that's how I am sleeping since the end of week two. Mostly, I find it makes me feel as if I am lying on a bunch of rumpled sheets or blankets. Then I quickly realize, I am the rumple.

That's ok.
I haven't tried just sitting behind the wheel of my car yet for many reasons, but the primary one is I am not able as yet to give up the Rx pain meds. I wish I were, but wishing doesn't make it so. Though I had my left knee replaced, I know it wouldn't remain comfortable for very long in the driving position without pain meds and it would be a distraction. I just don't have enough flexion.... yet. I'm sure it'll come soon and in the interim, I have a great chauffeur in the form of my husband. If you can manage to give up the Rx meds and your right knee is strong enough and flexible enough to maintain driving control, my hat's off to you!