Let’s face it, very few medical professionals are trained in sport specific injuries and even those that did a general sports medicine fellowship are most likely not trained in cycling biomechanics.
Personally, I would probably not take 6 weeks off for a knee niggle. I’d get a second opinion from someone more expert and address any fit issues causing the niggle. I’d do the exercises to see if they help.
I had an issue like this once and my doc recommended taking advil for five days straight even if the issue felt better after a couple of days. A PT though technically cannot prescribe anything. A PT cannot even officially “diagnose” a problem at least in the US.