Getting Vaccinated Against My Moms Wishes

Hi r/legaladvice! For context, I am 17 M and live in Arizona with 50/50 split custody divorced parents.

Since birth, my mother has been a strong advocate of keeping me unvaccinated. I (a senior in highschool going into college this august) need to submit my mmr(measles mumps and rubella) vaccination records before i can be assigned a move in date or confirm my dorm assignment. (which is required before the date I get my dorm assignment)

She consistently advocates that she “swears to god she will not let me get vaccinated” despite me being adamant that i would like to receive not only my MMR vaccine but others for my safety

She ignores my requests and I even got chickenpox late sophomore year of high school and had to miss the last month of that year because I was unvaccinated. The only vaccine I have ever recieved is tetanus because I was scratched by a rusty nail on the beach so I can’t claim religious exemption with that showing in my medical history

Me, my dad, and step mom are all in agreement that vaccination is not a bad thing and is important and even necessary for college registration, but my mom will claim that they assaulted me and try to sue if I get vaccinated without her consent

TLDR Is there possible ways for me to get my shots before my 18th birthday so I am allowed to move on campus and attend my classes? I had the idea of getting emancipated but that seems like an excessive process for one vaccine

Thank you!

edit: my mom and dad have some form of joint medical decision making per a divorce decree thats in effect until my 18th birthday