Use Gutenberg on one (and only one) page

I have the classic editor plugin running on my site. I never even used the visual editor previously, just the text editor. I know enough html to push things around, though CSS still baffles me.

Still, despite all the disparagement I see about Gutenberg, I would like to be able to try it. Specifically, I would like to make a copy of one of my pages and then try editing it in Gutenberg. But I don’t want to change the rest of the site to Gutenberg. Is there a way to do this?

In effect (I guess) put a page in a sandbox and turn on Gutenberg for it but for nothing else.
—–Paul——