The ArchiveTeam has the ArchiveTeamWarrior project which is a small virtual machine or Docker instance that will help index and archive various sites based on need. For instance a big focus is on Reddit right now before the API access gets pulled or too many sites go dark permanently. This tool uses spare bandwidth from multiple locations (everyone running the tool) to not hit IP blocks due to rate limits or other issues that occur when trying to access as much of the site as possible.
Archive team is not affiliated with the Internet Archive (Archive.org) although Archive.org hosts the content. This is then made available via The Wayback Machine.
Not sure. I’m leaving mine running for as long as possible to get what can still be archived. When some subreddits come back on the 15th the process will pick up. Then it is a dash until the API dies.