How can I cope with being trans in school?

Hey I’m ash 👋 I am afab and genderfrect(basically genderfluid but with a stronger connection to masculine genders) and I’ve gotten really insecure about my body, more dysphoria than ever lately, and I’m going back to school in under a month. No one besides a few close friends knows who I really am

and I don’t know what to do. I don’t think I can survive the year having everyone calling me she/her and by my legal name but I’m scared to try and ask people to call me he/they and ash because most people in my school are homophobic and unaccepting and I don’t want to face more harassment.I don’t know what to do. I just need help. I know some ways to ease the dysphoria for myself with things like binding although most of my dysphoria is bottom dysphoria. Idk I’m probably just rambling on here. But I’m completely open to any suggestions. And uh yeah. Take care, be safe, and luv you all./p