I tried to get my GP involved. Called the doctor's office, told the nurse about my endeavor and asked for a checkup (this was a week into the fast). The nurse basically told me that while she saw value in what I did, the doctor doesn't approve of fasting, and that it would be better to not even ask.
She gave me contact info of another doctor, who was however five years dead by the time I tried to reach her the next morning. I figured out I won't let this stop me.