Re professors - Depending upon university policy, they might be willing to change your name in the registrar's office, even without legal documentation, to a "designated nickname." This means that the course rosters, etc. will have your preferred name. Depends on the place.
Also, they should be encouraging faculty to have a section of the syllabus that states something like this: "Class rosters are provided to the instructor with the student's legal name or designated nickname. I will gladly honor your request to address you by an alternate name; please alert me so that I may make changes to my records. Additionally, feel free to share the appropriate pronoun that you would like me to use when referring to you. Through my teaching and the content of this course, I aim to affirm people of all gender expressions and gender identities. If you have any questions or concerns, please do not hesitate to contact me."
On the first day of classes, I have everyone introduce themselves and indicate their pronouns. I find that young people today (yeah, I'm old) don't blink an eye. Of course if you're at Oral Roberts U or some such, different story.
Check the university website, registrar's office site, etc. for policies, recommendations, etc. Good luck!