Thank goodness I don't have sudden uncontrollable sleep attacks. Is that the symptom that makes you think withdrawing from medical school might be necessary?
While I'm speculating about having to withdraw from medical school, I can tell you that the person I know with the more serious narcolepsy will fall asleep for short periods (less than a minute) many times throughout the day, at
any time, sitting or standing. Sometimes this just seems like a strange, uncomfortable pause in conversation, etc, but sometimes they will collapse.
Obviously this has major life implications. This person cannot operate any motor vehicle or ride the bus (they miss their stop constantly) and has to walk everywhere. This person has significant trouble doing tasks people find "boring" (like cleaning) as those tasks often cause multiple episodes. Also, many people find someone falling asleep while talking to them unsettling, which has limited this person's employment opportunities. They otherwise live a fairly normal - if subdued - life, but can't do too much outside the house without what amounts to a chaperone.
Hard to believe that person could be a physician. My friend in medical school seems more similar to your case. They take medicine, but their main symptom is basically being sleepy all the time. Before getting on the meds, this person would sleep for 12-14 hours a day, and would be constantly "accidentally" falling asleep (e.g. during reading, watching TV...not doing active tasks). They could fall asleep whenever they wanted, which (as an insomniac) I sometimes envied. By keeping a more regular schedule, going to bed and waking up at scheduled times, limiting naps and limiting
caffeine (apparently makes a big difference), and taking medicine (I want to say some kind of antidepressant) they have been doing pretty well.
Good luck!