Do hallucinations and delusions from Lewy body dementia just disappear for awhile?

My 94 year old dad's LBD moods change depending on the level of anxiety he's experiencing. When he lived in his house, it was really bad.. Medication adjustments usually help if the anxiety continues for a period of time. He was in AL at the start of covid and then when everyone was confined to their room, he started slipping back and ended up in skilled nursing for many months. He is no longer mobile but confined to a wheelchair. I moved him to memory care in February. Things were a bit rocky at first and I have limited my visits to once every few weeks but yesterday he was the best yet. He was really like his old self, grumpy as ever and complaining just like he used to, with a little bit of joking in there too. Have not seen that in a long time. They have been able to deal with his dementia behaviors better than skilled nursing and he had none of that in ALF. He gets a written list everyday of his schedule. He made a point to tell me he is the only one who gets that list and showed it to me several times. The give him plenty of time in advance to let him know when it's time for his bath, breakfast, etc. His anxiety level is the best I've seen in a long time since someone has taken the time to deal with the dementia behaviors in a proper manner.

There could be some trigger from floor coverings and/or window furnishings - squiggly patterns can look like snakes, furniture can appear as strange people/animals.
Hard to detect, but look for any clues from gesturing or just proximity where these events usually occur.
While I am driving with my dad, he often sees "buildings" that don't exist (the rapid change of scenery, or play of light perhaps?). Fortunately, these aren't terrifying but it would feel disconcerting nonetheless.

My brother's LBD hallucinations went away completely when he moved to ALF. I took over as his POA and his Trustee of Trust, handled all his paperwork, taxes, bills, and etc. He said the relief of not having to worry about anything, groceries, bills and etc changed his sleep patterns at once, and helped his hallucinations enormously. If you look up a graft of how dementias work, Alzheimers and some others move downward inexorably whether in stairstep or slope, while Lewy's is up and down and all over the place. Can improve a while and then get worse. So I would say from personal experience that Lewy's is greatly affected by anxiety. The ALF agreed and said they see improvement often when people are relieved of things they fear they can no longer handled. One of the loveliest of the Social Workers there said she teases her hubby that ALF is her dream life.