You don’t need to downshift when stopping. If you want to save fuel, keep your eyes on the road up ahead. Shift into neutral and just roll. When it’s time to brake, use the brakes.
When you downshift, you cause your RPM’s to shoot up. That means more fuel is being used. You only need to downshift when you need help stopping. Otherwise, it’s cheaper to replace your brakes than to replace transmission components.

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