Hi, Thanks for writing in. Chronic parenchymal kidney disease needs treatment with dialysis or kidney transplantation. If your doctor has still not mentioned about dialysis then the condition of your mother might be clinically better to be treated without doing dialysis but creatinine level 5.6 is high. You must regularly follow up with nephrologist and try to maintain creatinine levels as low possible. A lower protein diet to minimize waste products in the blood. As her body processes protein from foods, it creates waste products that the kidneys must filter from your blood. To reduce the amount of work her kidneys must do, eating less protein might be good. Salt level must be controlled as too much salt can cause more problems. You can cook vegetables like cabbage, garlic, cauliflower, garlic, onion, spinach and pumpkin. Fruits like apple, water melon, pomegranate, pineapple can be given. Egg white and fish are rich sources of protein and can be given in small amounts. Little amount of oil can be used to cook.