If you have a spare Wyze Plug, then something like this should be trivial with a Shortcut Automation:
DO
Cam Floodlight v2
Turn off Motion Warning
Turn on Plug
Then you add a Device & Service Trigger Automation for the timer and reset:
IF
Wyze Plug
Has been on for 01:00:00
DO
Cam Floodlight v2
Turn on Motion Warning
Wyze Plug
Turn off
I don’t immediately see a way to do this without some kind of intermediary work-around that can provide a “has been on for” or “has been off for” condition for a second Automation (the trigger), but what you’re asking about seems like it could be a request for this Wishlist topic:
As with any Wishlist topic, you can visit that one to click or tap the Vote button above the initial post and share your ideas and use cases in the comments to show your support for the product and feature request/suggestions that are important to you.