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TLS Certificate Lifetimes Will Officially Reduce to 47 Days
(www.digicert.com)
This is a most excellent place for technology news and articles.
LetsEncrypt also built ACME, so they're the primary port for testing RFC8555. They're just gonna work better at it.
But, as above, maybe Digi is still the way for you, with the right tooling glued in.
Good luck!