Patrick, I play a lot of Bach and chamber music. Most of it is not in the loudness range where you have the option of doing what is necessary...... In quintet or big band, I can help my embouchure along with a bit more force and everybody else cooperates. If I bury a soprano, then I have a problem. 2 weeks is what it takes to have my body enough out of the picture that my mind can concentrate mostly on the music. It is very similar with a broad range of my students. Their playing after a couple of days off does not go to hell, but getting through a 60 minute lesson with me is a real challenge. After 2 weeks, things are pretty much back to normal. That is my 2 week experience. I can see where a semi pro or very active amateur could get through after only a couple of days back on the horn. That is not what I mean though.