November 2016 exam Schedule problems. 4 exams on one day!!!

My subjects are: HL Biology, HL Economics, HL Computer Science, SL English L&L, SL Portuguese B and SL Math Studies.

I was looking at the Nov 2016 Examination Schedule and realised that i have a major problem. On Friday, November 4th, i will have:

Biology HL paper 1: 1h

Biology HL paper 2: 2h 15m

Computer Science HL paper 1: 2h 10m

Portuguese B SL paper 1: 1h 30m

Added with the 25% extra time i have for each test i calculated that it will take me 8.65 hours to complete all those exams one after the other with no breaks.

The same sorta thing goes for Monday, November 7th:

Biology HL paper 3: 1h 15m

Computer Science HL paper 2: 1h 20m

Computer Science HL paper 3: 1h

Portuguese B SL paper 2: 1h 30m

On this day i calculated 6.35 hours including the 25% extra time for each test and no breaks.

Am i really expected to take all these tests on those days?! I don't even think that it's physically possible! What does this mean? Can anyone tell me what happened to them in a similar situation? What should i expect? Is there anything i can do?

I already spoke to my IB coordinator and she just told me that she would look into it...

If there really isnt anything i can do about this, does anybody have any tips on how i can mentally prepare myself for days like these? Thanks in advance for any help.