since you work in-home, you are not visible to potential clients.
You can start an outdoors (or mall, if permitted) program which can be as simple as a group walking program with some additional interesting exercises. Wearing a shirt with your name and telephone number is helpful. Stuff your pockets with business cards.
Your NASM specialties are well regarded, and you can try to contact chiropractors, physical therapists and massage therapist to have a mutual referral program.
I would make the facebook business page a little more personal. People love to see YOU, and you could describe a ‘move of the week’ with pictures of yourself.
I wish you a happy New Year.