erm...so you are having your french exam 2 yrs ahead of the rest...
Am I right to say that cos I don't quite understand what you're saying
If you feel like you can do it, then you don't have to worry about it.
You have what it takes to pass that paper and you know it, so relax for now and then panic later when you realised you have only 1 week left to revise for your paper

(the last part is a joke but that's what I'm facing now...2 papers in a week time and worse of it all, I haven't started my revision yet

)