First things First – I’m the guy who scored 95 in English 12th boards btw, So I know this. 😀
5 days without any previous knowledge is not enough. If you have an idea about the chapters and you’re generally pretty good with writing stuff – You’ll be fine. I’d suggest look into previous years papers. Try solving at least “1” of them – not asking for a lot, genuinely take a paper – set time and attempt the sample question paper. You’ll get an idea what’s going to happen. Because for some of my friends – the time wasn’t enough.
All the best! If you have further questions – DM.