First off, if you go to the appointment, then it's in your medial record. However I don't think nightime restless legs in-and-of-itself has any bearing on your ability to fly.

Are you certain the prescription meds will DQ you? You seem to have identified some non-prescription remedies which may help...that sort of thing has worked for me in the past. In many cases lifestyle, diet, stretching and exercise can help with many minor medical issues...prescription meds are often just a crutch for those who are too lazy to live healthy. You might try improving your lifestyle for a while and see what happens...if you are in a pilot training program, there's a fair bit of stress and uncertainty that could lead to anxiety.

You probably want to get some outside medical advice...that won't end up in your medical record. AOPA has a service, and there are several private consulting firms staffed by ex-AME's who specialize in pilot medical isues. Here is one: http://www.aviationmedicine.com/