My Dad got sick a few years ago and was put pain meds . He is still on the meds and his wife took him to a doctor that said he is incompetent ( which he is not the meds make him loopy) She now has poa and has put him in a care home and has taken his pension. He is not incompetent it is just the meds which he wants off of. He wants to get out of the care home and live with one of us. ( He wants to divorce her) He wants to change his poa to one of us as well. How do we do this if she had him rendered incompetent?