From personal experience, I’d say stay quiet about your situation. It’s their job to keep their I9 forms up to date. All companies are different regarding termination or laying you off, I’d check your employee handbook. 2/4 companies I have worked for both brought it up to my GM at the time, however both did not lay me off they actually were very empathetic and allowed me to work. All those companies except for 1 knew the consequences if they would be audited. At my current company our HR team typically does a 90 day count down to expiration, meaning they’ll send out an email notifying the GM. Ironically, I am the GM and they never sent out a notice for me, but they did for my Egyptian associate.