rowuk

Patric,
nobody said that you were going to ruin your career. What has been posted however is a great example of how especially less experienced players should NOT consider or plan an embouchure change.
Your chops are what makes the trumpet work and hard work has never been a substitute for maximizing the odds. Based on your posts, I do not consider this "switch" as having good odds. I see a certain risk if you have any commitments at all in the next year AND I want to stress that I have never experienced a successful switch back to the old way. A failed attempt to change embouchure generally means completely starting over as all of the good and bad habits have been corrupted!
There are dangers in any embouchure switch. Your posts do not provide any evidence that you know what you are getting into or if it doesn't work what Plan B may need to look like.
The promise of a better high range seems to be the common denominator for many self inflicted switches. I'll bet almost all of them fail. If you at least would have started with professional help, that means a personal visit to someone that knows better, a proper evaluation of your present situation could have provided a proper course of action (if any would have been necessary at all). What you have written shows that "luck" will be a major factor for your success.
It is your face and we can unseen/unheard only guesstimate based on our experiences. When I read things that could be potentially harmful, I use the open forum to say so. This thread reeks of trouble.

By the way: pros do not always know what works or what could be better- they know how to properly use what they have to get the job done. They also know that messing with success increases your chances of failure.

__________________
Whenever I feel blue, I start breathing again.