Velvet Red Asked: I don’t sleep at night because of nightmares about my eating disorder?

I used to have anorexia/bulimia but got better. I never recovered fully but I eat more now and such.
Recently I have been having nightmares about my eating disorder. Like flashbacks from when it was really bad.
The nightmares are so bad that I don't allow myself to sleep at night at all and eventually fall asleep somewhere in the day. Since I have school I obviously need my sleep. I'm a teenager and I can't go to my mom about this.
I am starting to relapse again and I am so scared because it has literally scarred me for life.
I absolutely hate consulars so I can't go to them . Is there any way I can solve this on my own?
Please help. Thanks