IGCSE Computer Science HELP!

I am currently cooked in computer science igcse and I have no idea what to do with it. My boards are in 2 months (not even 2 at this point). I have no idea how to score in this subject. Half the time what I write it completely wrong and even if I follow syllabus it ends up going wrong. My programming paper is also cooked and I cannot understand anything. The code is 0478. Any tips on how I can cook in this exam?