Steve, don’t overanalyse it.
Stick with the Windworks plan. Your “new” way will take time to take over the old way. That means some time with a lower range, then a time when it catches up and finally takes over with way less fatigue and way more resonance.
Trust me (or more importantly, Greg) I have been where you are and whilst I am not a screamer I can now play consistently above high C and finish 3 sets of Big Band without having to ice my chops.
Loving trumpet way more than I did years ago! Thanks, Greg
Straight Airstream!