Deciding whether to stop Herceptin/Perjeta after 8 months

Anyone out there who has chosen to stop treatments before the standard 12 months? I have run out of my lifetime benefit for my health insurance. And apparently no ACA insurance plans in AZ cover Herceptin. I have looked into the research on length of treatment and have found studies showing not much difference between taking it for 6 months vs 12 months, except that the 12 month group had significantly more toxicity. Yet the standard of care is still 12 months. My doctors at Mayo Clinic say they cannot recommend stopping before 12 months but a pause until i find insurance is OK. My next step is to explore alternative naturopathic treatments. Not sure what to do.