Everyone needs to do this NOW. Do not get complacent and think others will cover you. We need hundreds of thousands + to bombard their offices.
Even if you have already contacted, contact again especially given the fake news about the GA call which was leaked.
The US congress has limited powers to object to EC votes and its mostly for show. Two slates of electors were not officially sent! The only realistic hope is for state legislatures to decertify. Many state legislatures are back in session today.
Use this one stop shop link to do it https://freeroots.com/go/scan-the-ballots