Yeah for sure it is. I mean like others said, you can definitely just hold the clutch in and "coast" down the gears all at once till you reach complete stop, but that's dangerous because you may not be in the right gear for an emergency.That's how i do it now but consider it engine braking since I'm using the engine to "brake" my speed, same as doing it in a vehicle when on snow/ice. But at least I know now i'm doing it "right".
The manual calls out the ideal downshift speed for each gear...it is definitely on the very conservative side. You're good.