thanks for the query.
From the description of your disease process you seem to be having a slowly progressive form of kidney
1) If GFR is 23; you are unlikely to need dialysis
at present. However we need to monitor the GFR 4-6 monthly and the trend will help us in making better predictions as to whether you are headed for dialysis.
2) You need to reduce the potassium and phosphorus in the diet if their respective levels in the blood tests are high. Protein restriction helps some patients. You need to see a dietician for the same.
Your current symptoms do not appear to be related to kidney failure but its only possible to give a definite opinion after examination.
hope this helps