Using CVT decompression to slow down

I learned how to drive using manual. I would use gearing down and
decompression to slow down instead of always relying and using the brakes,
which I would use to come to a complete stop.
Should I use the Honda Civic CVT transmission the same way, gearing down
from D down to D3 and D2? Does it significantly wear down the
transmission? Or shoudl I go back to using the brakes all the time?