My father has been with diabetes for 45 years and now his 90 yrs old. His HBA1C is 6.3, Urea is 112.8mg/dl, eGFR is 7.8, creatine is 6.7mg/dl, calcium is 8.7 mg/dl, BUN 53mg/dl, potassium is 4.4 mmol/l, Urine microalbumin is 20. He also has polyuria as well. His general condition is not bad. Appetite is good. and BP is ususally 100/60 . Hb is 9.3. How about his prognosis and treatment for him? Thanks in advance for your time and kind suggestions.