Agree with @LisaW2--a renal dietician is essential at that stage!!! Potassium and protein intake in particular must be closely regulated, Redz. If you can't find a renal dietitian locally, you can find one at a university medical center. As a physician, I find it surprising that they haven't already recommended it. Might you consider continuing your care at a university medical center?

Salt, sugar, fat, and processed foods must be avoided, as I'm sure you know. The more veggies, fruits, whole grains, and plant foods, the better. Animal foods increase the acid load in our bodies, which impaired kidneys can't handle, especially at stage 5.

They should refer you to an actual renal dietitian if you are dealing with that stage. Mediterranean diet is the pretty much universally accepted as the dietary pattern that has the most beneficial health outcomes across the board, mainly because of the emphasis on whole plant foods. However, nephritis requires specific medical nutrition therapy which the Mediterranean diet is not. A dietitian can help you sort out what the medical nutritional needs are and keep general health in mind.

Yes, I do in my own way. I don't follow anything specific, but I do tend to stay away from or limit foods and drinks that can harm my kidneys further. Several cookbooks are available specifically for Stage 3 CKD, but they are also beneficial for anyone at any stage. I borrowed mine from the library and copied the recipes I liked the most.

I don’t follow any diet unfortunately I am a foodie. I can eat lunch for breakfast. I can eat dinner for breakfast. It doesn’t matter what I eat as long as I eat.
And I don’t gain any weight so I’ll take it let’s stay right there where I am lol
But if I go on vacation and come back a week later, I might gain 3 to 5 pounds but I lose it right away
Best of luck everyone to each their own 🙌🏽

The generalities are easy. When it gets into - what has high phosphorus, potassium or protein.... 😵‍💫 I find myself on Google non-stop. He understands "everything in moderation" but even some healthy things shouldn't be an option for him.
He's not playin'. Dad & brother died early from undiagnosed kidney disease (lupus?) and poor health management.