Yeah to fun new to you bikes

Knees..... I do my best to start every day standing next to the wall doing shallow single leg knee bends for 3 minutes - each leg. Then is off to toe raises on the stairs.

I have my saddle set so when extended, my knee has only the slightest of bend, again to keep pressure off of the joint
When we tour for more than 3 consecutive days I have learned to live with a swollen knee (thank heavens for ibuprofen)
So far (56) I have been able to put off the total knee and fingers crossed that is the case for a long time. However with that said, the minute this knee interferes with my riding, it is coming out. I know several bike riders with fake knees so am confident that it won't be the end.