Figma Slides: Multiple decks in one file (like Figma Design)

When I was doing slides with Figma Design, I would have a page for each presentation within a specific workstream, something like the following hierarchy in my organization.

Project name: ClientName
— File name: Packaging Design
—— Page: R1 Exploration - 24.01.01
—— Page: R2 Directions - 24.02.01
—— Page: R3 Refinement - 24.03.01

With the new Slides, this 3-level hierarchy seems to have been broken down into 2 levels, with the lack of an ability to have different versions of a deck within one Slides file. I miss that. In its current state, I foresee the Project folder in the organization being inundated with too many random Slides files that become difficult to organize.