As I also have anorexia , It is a life long battle to keep everything in check. Most everyone falls off the wagon and slips back into it.
Honestly , unless someone has a ED its really impossible to understand how hard it is to stay on a healthy path.
I have many times been able to go years, once was even 5 years eating normally. But a switch was flipped and I feel back into the hellish world of eating disorder Anorexia.
Im currently working out of one of my worse episodes to date...I am 47 mine started at age 9.
I hope you have a Therapist than understands ED's and can help you to stay healthy mentally and physically.
I understand your struggle

Feel free to PM me anytime.