@julieprayer This discussion thread may be of help to you, found in our Kidney and Bladder Group: https://connect.mayoclinic.org/discussion/3rd-stage-kidney-disease/

Basically, as many have mentioned, diet and exercise seem to be the biggest factors for striving to maintain kidney health. Limited quality protein, avoiding excess potassium/calcium/sodium. Right now I am building my system up in order to eventually go on dialysis, so my protein consumption is higher than it would otherwise be.
Ginger