There's not always an easy answer to medical problems (or processes) and sometimes these things take time. A long trip is not necessarily going to yield any better results, but it probably would add stress to the bird's already compromised system.
Sierra: it sounds like you're putting thought into your decisions and researching your options, which is the real mark of a conscientious owner.
(Also, I've had my own GPs and medical specialists ask for similar time periods, and longer, for research. It's not unusual or unethical: better an informed than a hasty diagnosis, particularly with small birds, who can respond very quickly and violently to inappropriate treatment. Of course Sierra cares about her bird; we all care about our birds, that's why we're here; and any intimation to the contrary is frankly offensive.)
There's really no suggestion I can make that you haven't thought of already, I'm sure. The person who knows your bird best is you; so continue to observe. If any particular foods are aggravating, try to replace them; and watch for signs of agitation, as your bird may be a little confused and seek reassurance through interaction with you.
Good luck! Please let us know what the vet comes back with; could be useful info.
