User blog comment:Semedre/How to get 2 Fevers/@comment-124.188.17.39-20150714041621

The fever gauge carries over to the next lesson. Fill the gauge to about 90% and then keep using the infirmary to prevent yourself from continuing to fill it. Do this for the first lesson, and then when you start that lesson a second time, your fever gauge should be where you last left off.