An overlooked piece of the vocal puzzle...
As much as we love to sing, one of the most important parts of any professional singer's program is vocal REST! How can you incorporate?
Schedule 1-2 days per month of complete vocal silence, or at least minimal usage. Turn off your voice and focus on other aspects of your training, like fitness, health and wellness, practice another instrument or just simply rest.
For those importance upcoming performances, put your voice to "sleep" early (e.g. turn your voice off at 9-10PM on the night before and wake it up sometime the next morning). You will be more than ready to give your best VOICE on show day!