This conversation is over.
The request for any specification re the meaning of “very soon,” usually terminates a discussion. I’ve seen it happen before.
Btw, there is no drumbeat for Rosenstein’s resignation. The whole of DC is too busy threatening Trump re the hell he will unleash if he fires any member of the attempted coup to worry about Rosenstein.
Or rather, Rosenstein is key to their plans. Their support for him is fathomless.