Brother/Sister, I have done that. It's liberating but was terrifying at the time I did it. I left EMS for IT consulting and I was scared whitless. I remained at my EMS job part time but in the end, I mostly retired and have not been happier.
Have you thought about finding work with a smaller rural service that is less busy yet provides patient care/transport/benefits of a small service?
Sometimes a break is all you need. 6 months to do something different. Do you have the means just to travel the country?
Trust me, EMS will not die without you working in it for a year or so!!!