I agree with your instructor, Let it land on the main wheel then gently
set the tailwheel on the groud.

I find the best way to arrest the descent it to reduce the spoilers
just as I start the Flair. This will just about stop your descent and
you should be floating down the runway a foot or so off of the runway.
It will eventually settle on the runway or you can hurry up the process
by adding the spoilers back. Works really well for spot landings.

Brian
CFIIG/ASEL