Place the air fryer tray in the Instant Pot base. Set the dehydrating tray on top. Spray the tray with nonstick oil. Place the marinated lemongrass pork and spray with nonstick oil. Cover using the Instant Pot lid. Set the temperature to 390 F and set the time to four to eight minutes. Turn the meat as required. You can check the doneness at four minutes, add more cooking time if meat is still raw.