This will take some explaining, so bear with me.
I have a mildly serious underbite, which causes me to play trumpet with an upstream. However, my glasses slide down my nose and my upstream makes it so I can't see above my bell. This means I have to look down at my music, but to do this, I have to tilt my head down slightly. The result is a guy with his head pointed down and the trumpet straight out towards whatever's in front of me. I think my upstream is a little serious, because I can play better with the trumpet at a 35 degree angle to the ground then I can at 0 degrees. Any way to fix this so I can see my music in front of me and not have to look down to get the trumpet to be straight?