Prognosis for PSP. Do we need to take?

My friend's dad had been diagnosed with Parkinson's 9 years ago. Since then he is on medication, and while some of his symptoms got better, it did not work on some symptoms. Recently, they went for a second opinion at a reputed hospital in Bombay. They did a MRPI and it confirmed the Dr's diagnosis of PSP (Progressive supranuclear palsy). My friend's dad is not even fighting back, which is causing all of us a lot more worry. What are the different palliative treatments we can start? Should we encourage him to see a psychologist? Does he need a full time nurse/ care taker? What precautions do we need to take? He lives with his wife and his son. His wife also has aggravated unstable diabetes. Please help us doctor, any advice which can make my friend's father's life better would be appreciated. Thank you in advance.