There's so much you can do, since you have a lot of time left. Visit Current affairs section here regularly, read Tribune, besides Dawn, and history books so that you get adequately informed, though I prefer news from online sources over newspapers. It's no use that you are getting updated constantly, but you have no knowledge of history. And then there's always Youtube.
I'm not senior, but I've tried this, and this always works for me in the toughest of situations. Good luck!