You are now inside the body of a high profile person you know nothing of. How would you try to maintain the facade of that individual with least suspicion?
Imagine you wake up in the body of a famous and influential person in the bedroom where that person sleeps in. You know nothing about that individual prior to this incident apart from the fact that they are considered a high profile person.
Your only chance of survival here is to act like that person in front of their family, friends and the public for the rest of the unforeseeable future. How do you ensure you learn to imitate the personality of the individual by arousing the least amount of suspicion?
Fake being sick. Like vomiting, diarrhea, extreme fatigue sick. That can explain away lots of unusual behavior, plus an excuse to bow out of any commitments for a day or two.
Then research the hell out of this person online, and study their calendar/diary/whatever.
Hopefully they are wealthy along with high profile, so I can easily retire from the public eye if needed. Recent elections made me reconsider my values and how I want to spend more time with family, yada yada, who cares what the reason is so long as it sounds aspirational enough.
Am I in someone sane, rational, and smart, like a scientist or humanitarian, or did I wind up as some clueless jackass celebrity? There are wildly different requirements for these.
The latter would probably be easier - but the former would be more resplendent.
Tell everyone that I’ve just watched a Jordan Peterson video and I’m going down the rabbit hole and ask them if they know where I can get my hands on some ketamine. My irrational behaviour and urgent need for fast access to my funds would then seem pretty par for the course.
This is the best approach, only you tell enough of the truth to be plausible to anyone. Basically that you suddenly don't feel like yourself, can't recall much of your memory of who you are, and something's not right. Take it from there. If you're someone with much influence or power you have people around you that will help maintain your image while working through a transition to a different you.