hey guys im new here and have a question . im gonna tell u my story. 8 months ago i used to play off-center of my lips and decided to change to center of my lips . the thing is tht all this 8 months ive been trying to play in the center of lips but i just cant play as long and as well as i used to play when i used to play off center . i kno it was dumb of changing lip placement but i just didnt feel confortable . so just about this week i just decided to play off center of how i used to play a year ago. the firs two days i was doing long tones and excersises and i was almost able to play like i used to but didnt hav enough strenght to play as loud. i practice for 4 hours this two days and also tried to see if i could still reach those high notes and i did (nothing hardcore) and today i began to practice for thr third day and my lip kinda hurts when i try to play high notes but does not hurt to play low to mid staff . is it because i hav a year without playing or because i bruised or something ?