Botox on Masseter to Correct Facial Asymmetry?

Hi, 40-year-old male here. I have a masseter muscle that bulges out on one side and would like to correct it with botox. I'm getting conflicting information on whether or not to do both sides or one. I guess the logic is that if you do only one side, the other might bulge out to over compensate? Does this sound correct? To me it seems more logical to start with one side and see how things go. If both sides is the answer is it normally twice the botox on the bulging side?