I don’t think its time yet.
Let the Dems nominate Biden formally, and get too far down the road to replace him.
President Trump can satirize and humiliate Biden any time he wants. Trump is a master of it, and Biden is a sitting duck for it.
October, all day long...
However, I think Trump should still prepare to debate Biden as if he were the fully functional Biden of 20 years ago.
Just on the off chance that Joe’s dementia is all an act to set up Trump for a debate ambush.
Yes I really do think the Dems are that evil.