My father was recently hospitalized for a UTI. My brother is bothering the people who are trying to care for my father in the hospital and the staff in the memory care facility where Dad has lived for the past several months. They have made me aware that he is asking for extensive information, disrupting their ability to care for the other residents/patients. He hasn't visited my father in months, but somehow feels he needs to jump in now and be demanding. I am concerned about negative backlash. People like my father; they do not like my brother. I have the decision making authority for my father. My brother does not like me. He will criticize but not help. What can I do? Should I do anything?