Hi Clint, glad you're back and feeling better!
It is your responsability and right as a patient to be able to direct your own treatments and care. Tell your doctor you would like to hold off on the next 3 treatments and determin if you need them. If it appears they are not needed, then you don't have to have them. But if you start slipping back then you should have them since they did help you.
If your doctor were so unreasonable to leave you because you are taking responsability of yourself, then that is a terrible doctor. Good doctors will listen to their patients.