If Biden's prep team was smart they would tell Biden to do the following:
-Cut off Dana Bash and Jake Tapper at the start of the debate and ask Trump who won the 2020 election. Trump will say some wild shyt that makes him look ridiculous while Biden has that classic grin.
-Then Biden should immediately go 100% hard and say "I shouldn't be debating this guy. He should have been shamed into exile for attempting to violently overthrow the government to stay in power because he's a baby that couldn't accept a loss." That will get Trump going and he'll start saying more crazy shyt.
-When age is brought up, Biden should immediately do 5 push-ups and challenge Trump to do 5. Trump won't do it because he can't and it will destroy the whole fake macho persona. Biden should call him a wimp when he chickens out.