Welcome @slf202mcinfo, When my PMR was active I just tried not to overdo the exercising to the point where it made the aches and pain worse. I might just try doing a little less by stopping before you are exhausted to see if that helps.

It might help to alternate days when you exercise and/or add some stretching exercises before you start. Have you tried changing up the exercise routine or eliminating one of them each day to see if the leg aches get better? Do you keep a daily pain log along with prednisone or medication dosage?