Fyi mine was under “apps from unverified developers” in developer options.

Just enable the bypass now in preparation. Only took at second Google search:

Google provides a built-in “escape hatch” in the settings, though it is intentionally designed with significant friction to prevent social engineering attacks. [1] (https://keepandroidopen.org/), [2] (https://www.gadgets360.com/apps/features/how-to-bypass-android-24-hour-delay-and-install-third-party-apps-on-your-phone-11243027)

Unlock Developer Mode: Open your device Settings, go to About Phone, and tap Build Number 7 times.

Enable Unverified Packages: Go to Settings > System > Developer Options and scroll until you find Allow Unverified Packages.

Verify Intentions: Flip the toggle, confirm that you are not being coerced by a third party, and enter your device PIN or password.

Reboot: Restart your smartphone.

Wait out the Delay: You must wait exactly 24 hours. Google enforces this mandatory cooling-off period.

Finalize: After 24 hours have passed, return to the Unverified Packages menu to select either a temporary (7 days) or indefinite installation window.