Recovery process

Hi…my dad had an aneurysm rupture in Feb 2016 followed by symptomatic vasospasms. After 4 1-2 months and inpatient rehab he finally returned home. He requires 24 hr care due to confusion and poor initiation to take care of himself. Prior to aneurysm he worked full time and lived alone. I feel that he has regressed since leaving rehab. His confusion is worse and he has no drive to do anything. The dr thinks it’s a result of stress from all the new changes that have occurred since coming home. Does anyone have insight to share? Thanks!