Cloudflare's blog posts about COVID-19 impact on the internet is a good starting place:
<a href="https://blog.cloudflare.com/cloudflare-during-the-coronavirus-emergency/" rel="nofollow">https://blog.cloudflare.com/cloudflare-during-the-coronaviru...</a> and <a href="https://blog.cloudflare.com/covid-19-impacts-on-internet-traffic-seattle-italy-and-south-korea/" rel="nofollow">https://blog.cloudflare.com/covid-19-impacts-on-internet-tra...</a>
Google tracks how many people connect with IPv6, which is a metric for how many people are staying at home:<p><a href="https://www.google.com/intl/en/ipv6/statistics.html" rel="nofollow">https://www.google.com/intl/en/ipv6/statistics.html</a><p>IPv6 connections peak in the weekend and over the Christmas break, when people are connecting from home.
Most CIX do have a statistics website. See <a href="https://en.wikipedia.org/wiki/List_of_Internet_exchange_points_by_size" rel="nofollow">https://en.wikipedia.org/wiki/List_of_Internet_exchange_poin...</a>
<a href="https://de.wikipedia.org/wiki/Internet-Knoten#Tabelle_internationaler_Internet-Knoten_(CIX)_(nach_Datenverkehr_sortiert)" rel="nofollow">https://de.wikipedia.org/wiki/Internet-Knoten#Tabelle_intern...</a>