Nov 02, 2016 - 09:01 AM
If you believe he is not capable making or communicating responsible decisions and which make him unable to manage his personal (health), property and business affairs effectively and that by reason of mental deficiency, physical illness or disability, physical or mental infirmities, you could/should file to be appointed his guardian/conservator. If he has been diagnosed with dementia, Alzheimer's or other cognitive impairments this should be successful. Advise his doctor of your plans and see if the doctor will send you or the probate judge a letter.
You can also speak to someone at the assisted living home to see if others believe he is not capeable of making good decisions. I strongly recommend that you seek the assitance of an elder law or probate attorney in your area.
This is a drastic measure and could harm your relationship with him. I would not recommend unless he needs medical attention but refuses to go or he does not pay his bills or gives away money.