He had exhibited some moments of dementia but never to this extent.. Is this common? What happened? Is it stress? We think he might have stayed better at home, it just wasn't possible? Of course we feel responsible. Nothing like seeing your parent suffer. Don't wish it on my worst enemy.
Agitation is often a result of these moves and requires close monitoring of behaviors. It is not at all unusual for the facility to require a one on one caregiver be hired by the family. Adjusting to a new living situation is nearly impossible for some.
One family of a resident in my Mom's AL brought in a bird feeder and hung it from a tree. Each visit, they would fill it and then bring their Dad's chair near a window where it could be seen (or bring him outside when weather permitted). Try to make him comfortable and with any luck, things will settle down.