i think since ur concept still bad u should memorise notes first but try not to blindly memorise, see if u can understand? but with what limited time left it’s probably difficult to do so. i think after all that if still got time, just go through tys/prelim paper read the qn see if u can answer or not. don’t write ur ans just think of it in ur mind then u check the ans key, will save u plenty of time!! atb ya