Interesting idea, though a bit conspiracist IMHO, Trump has the coronavirus to manipulate the election.
I can't see how you could fake something like that.
Also
https://twitter.com/YouGov/status/1311958523912294401?s=20
No, surge predated announcement.
While I think the evidence for his faking it is nil, it would be really easy to fake this.
To fake going into hospital
To fake going into intensive care
Without a single person leaking it?