Worth a try, though probably needs more than a 1 month trial to really get the word out. But once it goes live on VRBO and Air, people will start to find it without you having to market much. Have you looked at VRBO and Air to see what's already available in your town? That can help with seeing how others price things, how they describe things, policies they list, etc.
One month will give a hint of how much less work it would be for you, as far as no meals to prepare, diets to worry about, and only cleaning when they leave.
It would be much like my own model, which is wonderful, especially if you can make it self-check-in after paying online.
It's not good for needy guests who can't do for themselves, but if you clearly market it as "you're on you own" you'll likely find you get a different crowd, more independent people who need less care. That sort of people are going elsewhere right now, because they are not B&B people.
I used to get calls, please bring us more Keurig pods, please bring us this and that. I finally got out of that by putting up a sign, "Self-Catering means, if you need food, more coffee, etc., you do what you would do if you ran out of something at home. You go to the store and get more." I rarely hear from anybody now.
It will be a big change for you, from catering to guests' every need to leaving them on their own. But a LOT of people these days PREFER to stay somewhere where they're left alone and don't see other guests. This change can make it possible for you to continue making income from your property well into old age. Good luck!