Step 1 - Unless you are already doing so, get immediately busy on private lessons with the best private trumpet teacher you can find. Make sure you are playing the best combination of horn and mouthpiece for your particular needs, so that the equipment works for you and not against you.
Step 2 - Realize that your greatest asset as a professional will be your tone - your sound. Make developing a tremendous tone your highest priority. Your most important asset, contrary to popular belief, is not range... It is sound - always has been and always will be...
Step 3 - Get to work on mastering all the fundamentals of playing. Flexibility, articulation, multiple tonguing, endurance, intonation, sight reading, master the ability to play with ease in all the sharp and flat keys, master the scales in all keys...get working on achieving total control of the instrument.
Step 4 - Get the basics of the instructional materials and start practicing...The Arban book, 27 Groups of Exercises by Earl Irons, Clarke's Technical Studies, Lip Flexibility by Walter M. Smith, perhaps the Schlossberg book, Embouchure Builder by Lowell Little, maybe the James Stamp book, etc., and others that can be suggested. May I suggest that you remember this...it is not PRACTICE that makes perfect - it is PERFECT PRACTICE that makes perfect. Practice alone makes HABIT - be sure those habits are good ones, because practice can also make bad habits. Your goal needs to be not to just to get good...that isn't good/high enough...make your goal to become the absolute best.
Step 5 - I would suggest that music be the choice of college major - probably performance. I'd probably consider going on for a Master's degree as well. I'm not as knowledgeable as many people on this topic, but a well recognized music school may provide an advantage - a college that has a strong reputation in music and the high quality of its music program.
Step 6 - Immerse yourself in the sound and style of the musical goals you wish to achieve. Become mentally one with the music in which you wish to make a career. Develop huge listening skills and "big ears."
Step 7 - Tolerate no distractions. Become focused and determined that nothing will interfere with achieving your goal. Make it the reason you are living.
All the best.