Update:
Today, monday 13.11, is day 8 of phase 2 (day 7 of amphotericin). Since day 2 I noticed a bit more flu like symptoms (runny nose, headaches, coldness, maybe a little fever) than ususal in this period (currently on day 17 since last O). On friday morning I started to get intense coldness/shivers coming from my kidneys as well as tension and light pains in this area (I think its the same as what I get as one of the first symptoms after O but more intense). It got worse until sunday where I got a little scared because I was freezing cold in the morning and shivers continued throughout the day. Also I had light burning sensations when peeing and noticed many small white flakes/pieces in my urine, never seen that before. I was afraid my kidney and liver were working too hard and, tough unlikely, might be infected or something. So I made an appointment with the doctor where I just was. Luckily, when I woke this morning, the urine was clear again and the coldness as well as most of the kidney tension was gone. What remains now is what I would describe as light soreness in the area. The doctor asked me for a urine sample and I will call later today about the results.
On another topic, I asked him whether abstinence over longer periods of time could be a problem. He said no, so I'll continue my current strategy of having the least ejaculations as possible. He also told me its best not to worry too much about POIS for now and recommended to start addressing psychological/emotional problems besides the gut therapy (He mentioned that POIS might be related to the autonomic nervous system, which is why we're addressing POIS indirectly for now). I will have another appointment with another doctor in the same office to discuss whether this would make sense and if yes what kind of psychologist would be the right fit for me.
So for now, I think I'm in good hands. Altough I'm still skeptical about the kinesiology part, the doctors competence and medical background seem impressive. He studied medicine, had several specialised educations (e.g. urology and chiropractic) and also training in traditional chinese and naturopathic medicine.