If I was in your position, then I would focus on getting good marks in the writing and speaking. If you revise your writing draft before the controlled assessment, then at least some of it will stick and as for the rest of it, just use the dictionary that you get the exam and write a brilliant writing controlled assessment. As for the speaking C.A, use good old google translate to write answers for the 5 or 6 questions you get asked in the speaking exam and then try your best not to crumble under the tension of the MFL speaking exam. I currently do Spanish and I have managed to get mostly As and A*s in my Controlled Assessments, so then you have something to fall back on if your reading and listening exam is bad(mine probably will be, revising for them is too much effort when there are other more important subjects to focus on).