I'd consider electing what text you want to write on in the exam. Read that text again. And maybe another time. If you haven't annotated already, annotate the second time (or both), and read any essays/feedback on this site, and maybe some external criticism if it's some famous literature. One third of your mark for text response is textual knowledge (well, that's slightly decieving; your pieces are marked holistically, it is, however, one of three criteria), so you need to know your shit. Almost a year since I sat my exam and I still know my text intricately. KNOW YOUR TEXT. you can't analyse what you don't know.
Then switch to a mixture of both reading and writing your text. Read portions every other day, just twenty pages here and there. Seriously, ten minutes if reading a day - that's jack shit as far as your SWOTVAC workload goes. But it makes a metric fuckload of difference in the end.
As for the writing part of that mixture, start sorting out your timing. Put yourself under pressure*. Write essays, read them (not immediately) after doing them and try to anticipate what debacle you will receive. I used to annotate my own essay before giving it to my teacher. Get the feedback, and if there's a lot of it, re-write the essay (type it) and fix it up. If there isn't too much, just be aware of it going into your next round. Wash, rinse, repeat.
For LA, just practice critically reading articles and analysing them.
For context, put your thinking cap on. Then wear it. A lot. And write some essays, of course.