I am curious if anyone on this site has, or has had, my same situation. I am 24, and have not played trumpet seriously since I was 17. I played for 7 years, all the way from middle, to high school. I was a very serious player during this time, and was in a competitive marching band in high school.
Part of why I stopped playing after graduating high school was because I had chronic embouchure issues. I developed a terrible habit when I was in 7th grade, and could never correct it. I began raising my trumpet up high, like parallel with the ground, but did not adjust my head angle accordingly. This caused me to rely too much on my bottom lip for support. That issue got less severe over time, but my embouchure was forever flawed nonetheless. I also started to shift my bottom jaw somewhat to the right, which caused my aperture, and airstream to be misaligned with the mouthpiece, and, consequently, the rest of the horn.
I was able to mitigate the issues throughout the remainder of my school years, though never able to correct them because of the amount of time, and effort I assumed it would take to fully relearn the trumpet with the proper embouchure. I was wildly inconsistent as well (specifically my range). Like, every day was a wildcard in terms of how I would perform. Some days I could play well above a C above the staff with no tonal issues, and other days I could barely manage a G above the staff. Needless to say, this was incredibly frustrating, and demoralizing to me, and very confusing to my instructors and peers.
Sorry for the huge novel, but I am curious as to what approach you all think I should take to relearning the horn. I have picked it up every now and then over the last 7 years, and I can get back into shape pretty quickly, but all of the same problems still arise. I want to completely relearn the trumpet the correct way, because I have no impediments to doing so at this time.
Thanks for any advice.