I just don't think Biden's admin has it in them to do anything about this. They'll ignore it and then later complain when Republicans do the same thing.
Really going to both-sides this? Merrick Garland is a heel-dragging clown, but even if Biden replaced him with the most aggressive and seasoned prosecutor on Earth today, how the absolute fucking fuck would you expect them to try this case in 28 days?
That is a federal thing, and Biden could bring federal charges; good job, cookie for you. What would he be doing by bringing these? Oh, just casually getting him indicted and either not having enough time to start the trial or, if the trial does somehow start, creating jeopardy and thereby disallowing future prosecution when Trump inevitably drops the case. Good thinking. Too bad you're not running the country with this 5D political calculus.
Edit: so actually, there's technically no risk of double jeopardy, because what the OP is describing is completely impossible anyway:
"Unless the defendant consents in writing to the contrary, the trial shall not commence less than thirty days from the date on which the defendant first appears through counsel or expressly waives counsel and elects to proceed pro se."
Thus you'll never reach a jury being impaneled or a witness being sworn, because the trial will never happen. So bravo, I guess; that risk isn't there. What you have instead is a DOA case that simply goes absolutely nowhere.