Is the Diabetics with Eating Disorders (
http://dwed.org.uk/) website any help?
For a low tech approach, have you tried the health section of your local library? Perhaps reading about anxiety and approaches to tackling it could help in the mean time. Sadly, mental health isn't as well resourced as physical health, and so I don't like to think of you holding out for an appointment that may be months away.
Did you see a programme on the TV on anorexia on Thursday night? Quite tough watching, I lost someone to an eating disorder and so I know it's not as easy as "just eat some food and you'll be better". The programme focussed on the daughter of a news reader who had anorexia as a teenager. She got some professional help in the end and got better, but she said the turning point was when the nurse said to her "you have 3 choices, you can die from anorexia, you can live the half life you're living now (painfully thin, eating the bare minimum, constantly rowing with her family about food) or you can try what we suggest and see how it goes", so she chose to give it a try. Quite thought provoking.