Actually over the internet, I don't make any recommendations. I just ask questions. If long tones aren't tremble free and you were my student, I would stop everything until we got the basics back. That is the advantage of regular lessons in person, we generally do not get to the point where things become "excessive".
I believe in a sickness called cyberchondria. It means we get told about some symptoms and phantasize the disease as applying to us. I suffered from this a couple of years back with a torn diaphragm. 3 months 100% off the horn and another 3 month comeback was the result. Things today are still "different"!
ALL of my students have a daily routine that is used only to bring us back to earth and maintain. Bad days can be measured and dealt with on time/in time.