If you aren’t in any pain, I think you’ll need more pt of strength training. We lose muscle strength as we age by not always using all our muscles. I’m going through this with my back. It’s a slow process and has to be consistent in doing it daily or we lose again. Also, our nutrition and getting enough protein daily is important for muscle strength. I’ve learned most do not get enough protein needed. I drink protein shakes for I know I am not getting enough in my diet.
Be glad you’re not in pain and go slowly with your training to not injure yourself. Get a qualified therapist. Let us know how it goes or what you decide. Good luck.