Slow Joe is missing the opportunity of his lifetime. The Dems want Trumps scalp, to hang up with Nixons, and they're willing to do anything to get it. There isn't enough time to get an impeachment done before Trump would leave anyway, so Joe should step up to the plate and refuse to take the oath of office until Trump is officially impeached.
Keeping in mind that it takes 66 votes in the Senate to impeach a president, and with Rassmussen reporting Trump's popularity actually going up in the last few days, it may take a while to get to 66 votes, even with the 2 stolen Georgia seats. No problem. We can wait.