If I were in your shoes I would look at assisted living facilities in your area. Don't tell him you are looking but you can determine if anything near you would be suitable. There won't be many male residents and I can tell you that he will get a lot of attention from the ladies (saw that at my Mother's place). There are a few continuning care communities that are month to month, there may be one in your area. The goal would be to provide him living options where he won't be lonely.
Yes, we're already doing that. My sister lives in his area and has a few places in mind. He's open to the idea as he's had many friends and relatives go through these stages. My aunt lived in a nice assisted living (across the street from Dad's condo apartment building) that was a small 1 BR apartment with a full kitchen and a bathroom built with elderly needs in mind. She could cook her own meals or have 2 meals a day in the central dining room. Lots of outings and activities. She was very content there. My sister says there is a waiting list and depending on my Dad's ultimate outcome she may apply. Lots of other assisted living options near him. The nursing home where he is right now is on a large "campus" for elderly of all different levels of need.