Chronic kidney disease, bp and diabetic.

My father is d patient age 83yrs,ckd since 17 months, diabetic 35yrs,bp since 1 yr, Serum creatinine 5.5-6.5, phosphorus 4.3,urea 235,calcium 7.6, sodium 129, ALP 68,total protein 5.65,albumin 2.84 ,potassium 6.32 chloride 107.4,hb 8.5 g/dl The kidney problem started just after TURP 18 months ago. At present itching esp on back is d main issue.h d on regular basis.but since last 3 months d patient refused to do so bcz of feeling weakness after HD. Even without HD s.creat varies 5.5-6.5 only. So my question is can we avoid HD.if no then what parameters must be concerned before HD.the patient strictly following the diet chart , no swelling and sugar is under limit no other problems.Guide me 4 d best possible action esp on itching .