To begin with age is just a number. Personally I feel Physical Therapy would be great for you for 2 reasons. The most important being it keeps you moving and help strengthen the muscles, tendons, and ligaments. Not just for your back but for the whole body. As far as acupuncture, it’s been around for thousands of years and some swear by it. ( I’ve never tried it ) . You might if able to try some light yoga along with meditation which helps with relaxation of muscles