I have a similar problem.
In the last year I have gotten the pain much more under control, used to be pretty much around the clock.
Now it is just occasional aching not sharp pain.
I use ibuprofen and frequent doses of diclofenac topical gel.
The diclofenac I use is difelene and I used to only put it on when my knees hurt, but the instructions on the package said use four times a day and when I do that it helps a lot.
I have soft neoprene knee braces for both knees with velcro closures,
I stop every lap around my nearby pond (0.3 miles) and rest just long enough to tighten the knee braces and check my walking app, so about 2 minutes.
My total walking time is around 55 minutes and about 10 minutes of that is rest.
My pain is pretty well controlled but if I go further the pain gets more severe.
Definitely try and control the pain I would say.
Just my experience, as always YMMV.
The problem that really limits me is my right knee on stairs is still really painful.
Up and down stairs, it's kind of variable but more than a few stairs and I usually have trouble and pretty sharp pain.