I don't really have anything important to say, my mind seems to concentrate on how things are written, sorry.
. . . . . he accidentally found out that he had diabetes when he visited the doctor because he constantly felt thirsty.
Not exactly accidental, he had a symptom, he saw the doctor, it was diabetes, no accidents there.
Sorry again, changed my mind. He was told that his pancreas wasn't producing insulin, so it must have started working again. His "drink" contained about 150 gms of carbohydrate, about half what a lot of people consume.
. . . . . .unlimited amounts of fruits.
If there was 150 gms of carb in the fruit in his drink, how many more carbs was he eating?
I have my doubts, but who knows?