Update: a very bad case of shingles in 2019-2020 decreased my eGFR to 8 and I had to undergo placement of a jugular permacath in August of 2020 for immediate dialysis. I continued my renal vegetarian diet. In December 2020, kidney function had improved enough to stop dialysis. During the four months of dialysis, After a failed attempt to create a left forearm fistula to replace the jugular permacath ,a left forearm A-V graft failed before an upper left arm AV graft attempt was successful. After dialysis was stopped, the temporary permacath was removed and a mediport put in its place for IV access if needed, blood draws, etc. I now have an eGFR of 19 and am back in Stage Four, though this probably is temporary since I can't have a transplant and remaining partial kidney isn't going to magically re-grow. I guess this is my long-winded way of saying that a person can have impaired kidney function and still feel and do fairly well.