Tried using the toilet without the medical seat this weekend. It was possible to do, but still very difficult, so I will wait a week before trying again, instead of straining my knees and quads.
Yesterday while walking my dog, I decided to try the hiking trail near my house. Since I just had on sneakers and didn't have hiking poles, I stayed on the lower flatter part of the trail and didn't go up the steep trails. I was able to walk about 1/3 of a mile on the rocky, uneven path before my knees started to feel tired. Good news is that I had way more stability than I have had in years. I returned to the sidewalks and finished walking my dog (almost 2 miles total).
Yesterday was my last holiday off, so back to work 4 days this week, then next week I return for the full week. I go for my 12 week check up on Jan 12. Hopefully the ROM in my right knee increases by then, since it is still right around 90 on most days.