For any kidney disease, regardless of whether it is caused by diabetes or not, the patient's water intake needs to be carefully considered. Generally, a few key points should be adhered to:

First, there should be no excess accumulation of water in the patient's body. The water intake should be excreted normally through the kidneys without accumulating too much water, as excessive accumulation can increase blood pressure and even lead to pulmonary edema or heart failure.

Second, if the patient's urine output decreases, water intake should be limited but not excessively, to avoid affecting the blood supply to the kidneys. Ideally, urine output should be maintained between 1000 to 2500 milliliters. Water intake should depend on urine output; if urine output is high, the patient can drink more water, but if it is low, intake should be appropriately restricted. It's necessary to weigh oneself daily to monitor changes in weight; if a large amount of water accumulates, weight will gradually increase, and at this time, water intake should be restricted.