Dealing With Dysphoria (Unable to Come Out)

I'm having a lot of anxiety right now, because I feel a lot of dysphoria but I know I can't come out. My parents are very unsupportive and I know that if I come out, they'll bully me every day about my nonbinary identity. Judging by some of the things my mom has said about trans people in the past, I'm legitimately concerned that she might kick me out of her apartment and force me to live with my dad. As you can probably tell, coming out isn't an option for me. But I have no idea how to deal with this dysphoria if I can't come out. I can't wear a binder, come out to my friends, change my pronouns, cut my hair short, or transition in any way without my parents finding out that I'm nonbinary. How can I deal with all this dysphoria if I can't transition?