You can raise your GFR.
You are correct that there is no cure, however, there are solutions.
I found out I had Kidney Disease by accident, and the nephrologist was not interested in offering guidance or suggestions. - my GFR was 50. On my own, I fought my way to the hospital nutritionist. However, I am not sure she is a kidney nutritionist. What I have done has been on my own. Apparently, being in Stage 3 when you are older, means you won't reach dialysis so you are on your own.

Nine months later, my GFR is 65-69. I have progressed from State 3 or b, to Stage 2.

This is because I began to self educate and I changed my diet. Alone in a virtual ocean of information, you can still figure out the proper course to take, and by comparing and analyzing the help out there, you can take giant strides in kidney management.

It is all about diet and that is how you will slow down, stop or reverse your condition. I have been a vegetarian for 20 years, so the meat was not an issue. The big four you need to consider are meat, dairy, salt, and sugar. There is a lot of help and guidance online, and by studying various diet advice and kidney-friendly help, you can become very well informed and begin to work on raising your GFR.

I have read Lee Hull's book and visited his website. Among his testimonials at his site, his dietitian claimed that with his program and Albutrix that dialysis can be prevented for up to a year. This means from 2 weeks, 2 months, or even 12 months, this program will help you be free of dialysis or a short term solution. If you can show me through scientific medical evidence from any leading kidney health organizations that Albutrix works for the long term, then he should be applauded for his work. At $200/month for his Albutrix, this is a steep price to pay for a short term solution. I love the science, but unfortunately. could not find the research for Albutrix use by a recognized kidney organization. I truly hope you succeed with his program and Albutrix.