Whether or not your psychiatrist, or his student, or those other counselors care ... Do you care?
If we don't care about ourselves and our own process, then why should others (professional or otherwise)?
If we aren't willing to put forth the effort to help our own process, then why should they?
Instead of starving for a month in hopes he'll believe you, why not start believing in yourself now instead?
Then take that belief and do what it is you know you need to do in order to be a healthier you?
Sincerely,
Pflower!