There are different levels and kinds of hunger. When I do what you suggest my brain and body don't work very well. After some time, blood sugar gets low and the glycogen stores in the liver are depleted. At this point my body tells me I'm dying. Obviously I've gone through this and lived.
My main point is that people will give mechanical advice for losing weight, but it's very hard to tell someone what feelings they will go through. It's very hard to tell someone else what 'normal' should feel like for them.
I wrote a long comment, but I kept erasing it because I don't really want to come across as trying to give medical advice, or telling you how to feel. I'm just hoping that the medical assessments you're describing (about glycogen, risk of death, etc.) are accurate ones given by your doctor in response to cutting your portions, not your own personal extrapolations or speculations—otherwise you might be letting your fears harm you rather than help you.
My main point is that people will give mechanical advice for losing weight, but it's very hard to tell someone what feelings they will go through. It's very hard to tell someone else what 'normal' should feel like for them.