Hello.
I am 85 at Stage 4 GFR of 28 for the past year...staying the same because of Diet changes.
Per my Doctor I was advise to do the follow which has worked for me
I am on the following diet:
Unnder 2000MG Potassium
Under 2000MG Sodium
Under 50MG Added Sugar
Under 135 Carbs
Total Protein of .6 -.8G per weight in kilos...(EX 200 lb div 2.2 = 90 .9 Kilos x .6 = 55G Protein)
No Soda, No Alkaline water...I only drink Hydra Water, Green Tea or Corn Silk Tea. I use stevia as sweetner. You can buy hydra water bottle on Amazon fo $50-$75, worth it
The aforemention comes out to about 1500 cal per day for me, I was 242 Lbs and now 196.
I track ever food value daily by spread sheet. I try to eat all organic which helps to learn and eat correctly.
I hope this helps>
George Hansen