I’m a relative newbie to PD, having been diagnosed 2-1/2 years ago. Since that time, I’ve had the pleasure to meet individuals who have lived with Parkinson’s for 10 to 20 years, and more. The common theme for living well with PD is regular exercise. The sooner that you learn to love to exercise, or at least find an exercise program that you enjoy, the better off you will be.
You need to think of exercise as your most important prescription, something that you need to make time for almost every day. Exercise is more important than any medication. (But medication is often necessary or helpful to maximize your ability to exercise.)