Masseter Botox - If I stop treatment, will masseter go back to original size?

I have had injections in my masseters for two years. I have always done the treatment every 3 months. I started with Juvuea the first 6-9 months than did Botox. I had about 25-35 units injected on each side increasing the dosage during my recent months. My question is given that I’ve gone so frequently and that my masseter had been significantly atrophied from before I started my treatment, if I stop treatment will my masseter grow back to original size. I am worried that my muscle has atrophied too much and that my results are permanent and masseter will not be able to regain orginial size. My question is how long will my masseter take to regain orginal size of possible and if my jaw bone is also now affected.