The definitive answer is: "It depends."
If you want a maintenance schedule, you will probably want a session every 3-4 weeks.
If you are having any number of issues and want to heal, you should have sessions as often as reasonably possible until the issues are taken care of. Of course, it will not be multiple times each day, or even every day, because you want to ensure you have healed from the effects of the treatment (i.e. Delayed Onset Muscle Soreness (DOMS)), which is expected the day after anything more than a Relaxation Massage). So, up to 3 times per week. I usually assign homework to my patients, so my expectation is that between the treatments and homework, your progress will be fastest with a more aggressive schedule.
I realize that most (all?) therapists have been taught to come up with a specific treatment plan for a Patient, but this presumes that the Therapist knows everything about the Patient, including their ability to heal, their attitudes, their priorities, their schedule, their insurance coverage, their finances, etc. Some therapists will take advantage of this to book more sessions to make more money. My desire is to help you heal, and no one can know in advance how many treatments, how often, will accomplish this - everyone is different. Therefore, as a Team, You and I will evaluate your issues and improvement at each session. We are always looking for improvements, and if they are not happening, other approaches may be considered. If you want to get better at sports, you train more often - If you want to get better at healing, you get treated more often. Beyond that, the actual schedule is your decision. All I can do is provide the best advice and treatment I can, when You are With Me.
Being as I have thousands of hours of training, and always have additional training and review happening, I hope you will defer to my Experience and Expertise. What I do for you is just as important as any surgeon, medical doctor, physical therapist or doctor of chiropractic - it's just a different methodology and focus.