I solved my husband's sundowning by giving him 10 mg of melatonin at 4 pm and another 10 mg at 9-10 pm. He was wandering off, ended up in the dirt and had to go to the emergency room with hypothermia. He had to have the melatonin before the sun went down. He had awful hallucinations. He would see 250 people pushing our travel trailer around. I had to go to the court house to get proof our house hadn't been stolen by investors. I'd have to look up just what medications he was given for the hallucinations and paranoia, but they did work. He liked arguing with me, it released serotonin, which in turn calmed him down. If you want to email me privately I could give you my address as it sounds like you are having a lot of the awful problems I had to deal with. The last year was the worst, but he didn't have to go into a home.