Don't let 1 paper affect u!!
First, let me ask u wat u wanna do after ur N levels? Go 4 O-Levels
or ITE?
Whichever choice u make,tell urself that u must work hard for ur
dreams!
And also, if possible, try 2 study at least 1 month before the
exam. 1 week isn't a lot of days to study. Besides, with 1 month, u
can spread out ur readings. Read through the textbook at least
once, and then ask urself which topics u not sure, and read through
the topics again. That's what I always do. Try ur best
man!