I'd like to tighten up the skin around my jawline and eyes. For good results, do I need to get Forma once a week or bi-weekly?

Hi there, I'm planning to get four sessions of Forma next month. I'm 28 and I'd like to tighten up the skin around my jawline and eyes, but it's not a disaster. Would spacing my treatments out every two weeks instead of once every week dramatically reduce the efficacy of the treatment? Thanks in advance.