I am in the process of interviewing for one of my dream companies. I am very impressed and the position looks like a great fit. I went through the screening and first couple round of interviews and did well. Their last step is a "virtual onsite" where they said I would be interviewing with several different people. I assumed that this would be anywhere from one and a half to two and a half hours. However, when I received the invitation, I saw that the interview is going to be five separate interviews with each one being 45 minutes long with 15 minute breaks in between them.
I'm honestly terrified of being interviewed for that long. The longest interview I've ever had to do up to this point in my career has been two hours and that already exhausted me. I am worried that if any of the individual interviews go over there time, I won't actually get the fifteen minute breaks in between interviews and become tired.
How can I stay mentally and physically focused for such a long time with or without breaks between each of these interviews?