I already have a signed notarized Power of Attorney for my mother but, the guardianship may give me more authority to make decisions about my mother's welfare. I 've read that you have to hire an attorney and present a physician's documentation to the court indicating an examination/diagnosis of potential incompetence. I've also read that incompetence may be difficult to prove and that it can take a long time to accomplish. Also, heard that it can be quite expensive.
in my case. It isn’t something you do without a compelling reason ie. she is a danger to herself and is resistant to care and won’t cooperate with you because of her incompetence.