OP, I'm not sure from your description if you plan not to talk about it at all, or if you are trying to concoct some kind of cover story. I would caution you to think about how you will talk about this not just now, but 10 years from now. You might get tired of the story, but find a harder time with the whole truth after that long.
For me, I told my family that I expected to retire when I came back from Ireland. Of course, I expected that in 2023. Having come back to the US in 2020, I called it a sabbatical, and that was true: I wasn't sure how my stache would fare in 2020, I had received a European-sized severance that discouraged me from working for the rest of the year, and I used that time to think about where I was. Come 2021, I am fully retired. I do not shout it to the heavens, but I am open about it, if it comes up. And I have no trouble telling people "no" if they assume I have oodles of time to give them--I have a lot going on!