I have found a solution to helping my friends keep up with the scattered nature of my online presence after cohost shuts down. I made a secondary mastodon account that is only announcements (for articles I've written, story updates, etc) which can also be used as an RSS feed in any reader without needing a mastodon account.
rss subscribe url: https://tech.lgbt/@0xabadAnnounce.rss
my main mastodon where I post about Whatever continues to be https://infosec.exchange/@0xabad1dea