Suggest Treatment For Paranoid Behavior And Panic Attacks

Our Uncle, who is in his early 90 s & until very recently was able to care for himself, his home, his garden & 47 heirloom tomato plants has recently been sent to a State Veterans rehab facility because of paranoia & panic attacks. He was calling family (who were hours away), neighbors & first responders, at all hours thinking that things were about to happen that were not happening. Of course he wants to return home ASAP. He is currently physically healthy, but aware that he may never return home. He is on Remeron & Ativan. What course of testing or action would you recommend to help him meet his goal of returning home safely? Thanks, Jeannine