Even though my eGFR is 32 and ACR is 69 my nephrologist still has me at stage 3a. I'm 72 and my sugars,sodium, calcium, phosphorous, and potassium levels are all normal and I don't have edema or other symptoms. I have some fatigue but can still lift weights (some impact on creatinine levels) and do aerobic workouts most days. She has me on 10 mg/day of Farxiga (an SGLT2 med) that dropped my average systolic BP to 105. My kidneys are also being flooded by sticky Kappa proteins from a blood pre-cancer that likely affects function. I don't have diabetes but am on a low sugar diet. While with stage 3b we are supposed to avoid red meat (and creatin supplements), having some fat such as olive oil, lean protein, fiber, and complex carbs with every meal is important to feeling full, slow digestion, and moderating sugar absorption. Adding a soluble/insoluble fiber such as psyllium hust slows digestion (helps my IBD), feeds gut bacteria, and can also help to bind cholesterol so it doesn't get reabsorbed into your bloodstream. I found this pdf on how some doctors evaluate our kidney disease and such: https://kdigo.org/wp-content/uploads/2024/03/KDIGO-2024-CKD-Guideline.pdf