A good treatment regime?

I was diagnosed in 2017 and have been on rasagiline - 1 mg for three years. It has worked well but the PD is progressing. My symptoms are primarily rigidity and the accompanying muscle stiffness and pain, weakness, fatigue and balance issues. Very little tremor.

Does anyone else have a similar history and recommendations for a treatment regime? To head- off the usual lectures, I have exercised daily for 40 years, I am active and do lots of stretching. I just need a bit of relief from the muscle aches and fatigue.