Directly from the manual.
2020 Toyota 4Runner Owners Manual and Warranty - Toyota Owners
Breaking in your new Toyota
To extend the life of the vehicle, observing the following precautions is recom-mended:
●For the first 200 miles (300 km):Avoid sudden stops.
●For the first 500 miles (800 km): Do not tow a trailer.
●For the first 1000 miles (1600 km):
• Do not drive at extremely high speeds.
• Avoid sudden acceleration.
• Do not drive continuously in low gears.
• Do not drive at a constant speed for extended periods.
It looks like you're going to have to be a wacko and alternate between 45 and 65 or so on your drive home.