It is not too early to begin thinking about an after action report.
One of the publications I write for is the Municipal Research Services Center (MRSC). My January blog post on their site is here:
The coronavirus has stressed almost every aspect of government. This disaster/pandemic has caused us to rethink what our Continuity of Government Plans (COOP) should look like and our pandemic plans were turned on their heads.
At this point we are coming up on the 11th month mark of the pandemic. If you have not started putting together an after action review of the event, you should at a minimum be collecting information and saving it. The pandemic is going to continue well into 2021, but you could start now with the establishment of a review process.
See the wise words that are included in the linked post from Pete Gaynor, FEMA about capturing lessons learned and then applying them to your planning and response operations. A link is included in the article to a COVID-19 AAR that was done for the City of Kirkland Washington, the first city in the United States that had to respond to the COVID-19 onslaught.