If your sensor does not have the xshut pin, then you can try using other ways to start and shut down the sensor. For example, you can use the I2C protocol to control sensor startup and shutdown via SDA and SCL wires. Or you can use another control pin, such as GPIO.
Note that using the I2C protocol to control sensor startup and shutdown requires special handling at the driver layer. If the driver does not provide a way to control xshut, you may need to modify or rewrite the driver.