Exercise, exercise, exercise. Stretching to maintain flexibility and better posture, strength work so that any weakness is due only to PD and not to lack of use, and aerobic something so you're fit, have some energy and sleep better.

Try out any suggestions that are inexpensive and easy and more or less sensible. I can't believe what a difference a little bit of magnesium makes to my sleep and thus my life - that came from a suggestion on this forum.

Do whatever it takes, within reason, to have a good night's sleep. For me, it's magnesium, some exercise in the sunshine, and going to bed at the same time every night. (I HATE the change to and from daylight saving time! - like today). Other things including medication help other people.

Good luck!