Ed since the FDA in 2009 designated B-6 pyridoxamine a drug because it reversed Chronic Kidney Disease the B-6 vitamin we get now is pyridoxidine and it doesn't do anything for your kidneys.
I use a substitute called P-5-P Pyridoxal-5-phosphate, co-enzyme form of B-6 I reversed my CKD down to almost normal levels and although it may or may not help your situation the P-5-P wouldn't hurt. You can get it in most vitamin and health food stores. Here is a link to an old article explaining it all. It saved me from dialysis after cancer took my right kidney.
https://www.lifeextension.com/magazi...kidney-disease