I work with customers that typically take 3 or 4 days to either acquire or renew a cert. Even though they are on one of the major cloud provider with automated certs, they refuse to use those mechanisms due to policy. They would rather send everything, including private keys, through email. They also take several days, sometimes weeks, to update a DNS entry. Welcome to modern IT.
Trying to deploy SaaS apps for customers it sometimes takes 3-4 weeks to get them to make any DNS changes, then at the last minute they CC us into an email with SquareSpace support for some reason (their DNS is on Cloudflare...)