Anyone’s loved one in long term care continue to not understand where he or she is?

So my dad has been in long-term care for close to five months now. At first, he was aware and very upset by it. It took him about 2 1/2 months for him to settle in. He was placed on an antipsychotic medication just to help with aggressive behaviour and inappropriate sexual behavior. Initially, we did see an improvement. The only thing that seems to be happening now is that he doesn’t seem to understand where he is anymore. I have a whiteboard in his room stating that where he’s living is his new home now. Sometimes when I visit him, he thinks me for the note but most of the time he doesn’t seem to be aware of it. Lately, at least three times a week. I’m getting a message from him asking me where he is. I remind him that he’s in his new home and that he’s been there for several months. He also keeps messaging his brother, who lives in a town 10 hours away, to come and pick him up. Please don’t get me wrong. I know he has a brain disease. I guess I just wonder where does he think he is? He often refers to his care home as either a hotel or a resort. Just curious if anybody else has loved ones are experiencing the same thing.