As someone who spent three years on dialysis and then came off AND without a transplant, I can attest that it works.
I improved my kidney function by making several lifestyle changes such as......
-almost permanent fasting on a 1000 calorie a day diet
-limiting my protein to absolutely no more than the target for my body weight
-eliminating most all processed foods and meats
-moving from hemodialysis to peritoneal dialysis
-aerobic exercise of a minimum of an hour every day -- often more
I did this from my own research and without encouragement from my docs. I was told I would spend the remainder of my life on dialysis. I refused to accept it. I agree that this will not work for everyone. But for non-chronic kidney failure (PKD, Alport, etc.) it sure worked for me!
How would you like to further increase your eGFR by 15%?
https://freerepublic.com/focus/f-chat/4064151/posts
Are you on metformin? If so, start eating oyster or maitake (Hen of the Woods) mushrooms and possibly see further reversal:
https://www.sciencedirect.com/science/article/pii/S0753332221007034
By how many points did your eGFR improve with this? It would seem to be 20-30 points.