Obtaining a Power of Attorney?

Is your boyfriend on SSI? Do you or does he receive government assistance with Medicaid or Food stamps? Since he is on probation was there any record of him being found mentally incapacitated? What source is your fixed income? Is it considered low income?

Since you have a medical POA why are you asking for a different power of attorney? Does he have a benefit check that is being used for his care? Does he understand what control a POA could give you? These are the type of questions an attorney will/may ask and it is possible that no one can do this POA without first going to court to prove that he can or cannot take care of matters himself.
These are serious legal questions that only an attorney can answer. If you and your boyfriend are receiving government assistance then you should be able to discuss your concerns with an attorney through either family services or the Legal Aid society. You can Google either of these with your zip code and find an office near you.

You can call some law offices and get free advice. Also go to the law library in your city or capitol. Some cities have places where you can do the filing and all on your own.

These places tell you how to do it step by step. Law Shops. Google locally in your area.