I would worry a lot if i was you...
I have seen many guys like you failing 6-7 tests for the second attempt, and most have even failed the nav or the met for the 3 rd attempot, after that you have to start from scratch.
if you do not have a background as an engineer or physician, or math teacher or whatever related with physic, maths,... I can tell you, it s going to be very hard that you will cry for your mom during the exam!
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