How do I tell my Dad that it's getting too much to care for him at home now?

I learn something neww everyday. I saw PSP and thought typo for PCP
Progressive supranuclear palsy (PSP), corticobasal degeneration (CBD), and multiple system atrophy (MSA), are little-known but disabling brain diseases, sometimes called atypical Parkinsonian disorders. These rare neurodegenerative diseases are often misdiagnosed as Parkinson's disease, amyotrophic lateral sclerosis (ALS), or Alzheimer’s disease. PSP, CBD and MSA lead to progressive decline, and although symptomatic treatment exists, there is no known cause or cure

I hope you have seen a elder affairs attorney and have all YOUR and His papers in place, Your not alone

I know it is becoming impossible to care for him at home. A skilled facility will be able to provide him with the best care, so I agree with you that it would be best. I hope that you are able to convince him without too many hard feelings. I know his life cannot be happy right now. PSP is one of the worst diseases I have encountered. I hope it can make it more comfortable for him. If you make it homey and visit often, it could make the transition easier for him.

I am so sorry that your father and you are going through this. Huge hugs of support coming your way.