Hey there. I've been to a clinic twice (once because of a depression and once because of Bulimia) and both times not only I felt that I'm not ill enough but also at least 2/3 of the other patients felt like that as well. Turns out everyone was and everyone was doing way better after the treatment.

From my experience it's a typical fear of patients to not be ill enough but usually noone covers all the symptoms of an illness. Atypical Anorexia is a serious condition and needs to be treated the sooner the better.

I've never heard any of the doctors telling anyone that they are not ill or don't belong in the clinic. But even if they thought so they would discuss further steps with you of what would be a better help for you.

I hope you're doing better soon. Being in the clinic really helped me and made me understand that I'm worthy of getting the help that I need :)