What Can I Do to Arrest Deterioration of CKD - Kidney Disease Symptoms and Treatment

I have CKD for over 12 years and creatinine has slowly risen from 1.8 to 2.7, but in last six months, it has been rapidly going up. Today it is 3.8. There is no change in my diet and blood pressure control. What could be the reason and what can I do to arrest this deterioration. Please guide.
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