How can I suppress the Windows 10 1809 end of support notice?

We have about 100 assets still running 1803 or 1809 and I would like to find a solution that can be pushed via command line or Powershell to stop users from seeing the notice. The goal is to roll patching slowly over the next couple of weeks in batches, but we would like to avoid an influx of calls in the meantime while Microsoft starts notifying users their workstations are not safe or need to be updated. Any scripts or tools that could help with this? Is there a particular update that we can block to avoid the notice? Any insight would be appreciated, thank you!

Question by Steve the Maker on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.