Please explain how that would be possible. Each cleanroom is devoted to making only one vaccine at a time, it takes roughly a week to do so. It may be a suite of cleanrooms you're speaking off, I do believe that they have several, perhaps 10 cleanrooms in a suite.
I'll try reaching DI for clarification, but unless they somehow can isolate 10 areas that don't cross contaminate one another in one of their tiny cleanrooms, only one batch of vaccine can be made manually in a cleanroom at a time.
Gary