advice for pdk

sir
my father is patient of polycysitic kidney disease since 3 yrs before(he come to know).
he was using medicines of elopathey.
but two motnhs ago,my father crealine rise to 9.2 and urea 290 , doctors was forcing for dilysis, but my father don't want.
he use medicine of homeopathy and hikmat, and very successfully recover his creatline to 5.2 and urea 110.

i am very thankfull to allah my father is good now. but every thing is banned for him to eat which can make him stronger.
he is now very weak.

i want you plz suggest any remedies to make this disease
to finished up.

and also plz tell me about the food he may take , i mean any list of food he can serve.
also any suppliments if he can intake?


hope you will answer me as soon as possible.

hamid Aslam
Pakistan