Great to hear that!

All the great singers of the past sang with this tongue position. I wouldn`t call it retracted, I would call it elevated. This tongue position is also good for your health. The resting position for the tongue should be against the roof of the mouth but many people these days have lost this natural position. Singing correctly is a great way to reactivate the tongue. We basically need to get the tongue out of the throat. If you want an old school source for this information then you can read Douglas Stanley`s book Your Voice.