Hmmm I didnt know how to substitute my sleep time with study until I got into my diploma years. I guess that's why I did better at my diploma than at SPM.
I wish I could turn back time
SPM is also important, especially English (both 1119 and GCSE O-Level). When I applied through UCAS, most unis contacted me and asked me for my SPM cert. But I guess it was mainly due to the absence of IELTS and I'm not from A-level or STPM.
Sorry off topic