Practice shots need to be balanced with exercises to work the opposing side. Besides stretching and bi-lateral exercises, I also take some time to swing backwards (RH for a LH golfer).

Maybe try incorporating some more short game stuff into your practice routine. If you feel like you’re getting really sore try working more on your 100yd and in wedge shots. These aren’t physically grueling shots to practice and it’ll help lower your score. Could also maybe snag a putting mat and work on that as well. Then at least you’re still working on your game but your body will have time to recover. On rainy days I just putt inside from different distances to help keep my putting sharp.