about p>3 minutes.
Because each piece of sweet potato is different in size and power, each air fryer is also different. Generally, to bake a whole sweet potato, you need to bake it at 2 degrees for 2 minutes, turn it over for another 1 minutes, turn the big sweet potato over, adjust the temperature to about 16 degrees, and bake it for another 1 minutes, which will make it taste better.