Help with the nursing process on diabetes insipidus?

I was wondering what were somethings that I could put down for each part of the nursing processing dealing with this disease?

Assessment: assessing for signs of thirst or dehydration
diagnosing: Im not sure what to put for this? Like the diagnostic tests that can be ordered?
planning: like planning they have lots of fluids and the decrease risk for dehydration and maintaining a healthy diet and getting exercise?
Implementation: Im not sure
Then Evaluation:

Im not really sure how to piece this all together in these categories any help would be nice. Thanks