If my father won't accept any help, am I liable for any injury he may incur?
If your father is competent to make his own decisions, there is little that you can do other than to try and convince him that living alone could present unnecessary risks to his safety and well-being. However, if you believe that at his present mental state of, as you describe, early dementia, he is unable to manage his own affairs, you can petition the court to be appointed as his guardian.
