The main thing is...just do it
. I do move around alot when sewing and purposely keep my iron in another room and my cutting in the kitchen (counter perfect height). I hope you find something that gives relief. One of my favourites is laying on your back on the floor, take a yardstick in both hands and raise my arms over my head trying to get as close to the floor with the ruler, once that is accomplished move the arms to the right until the ruler hits the floor, and back and forth. At first, it doesn't go very far, but after a few weeks, I can get the ruler right down.