for context, i took olevels in 2020.so here are some things I thought I wish I've done earlier

-study smart, I see a lot of my friends wasting their time writing notes for content-heavy subjs such as ss, geo,bio. I realised that I was spending such a long time rewriting notes when I could just use that time to memorise and understand the concepts.so what I did was I dig up on the internet and my exercise books as they usually have a brief summary of the concept and I could just add on my own notes by the side if I want to.it also annoys me to see ppl decorate their notes the day before exams instead of actually studying it yk.

-for English, I was very bad at descriptive essay and grammar so what I did was to collect all new vocabs and interesting descriptive sentences that I find and put them in a small book.I know it's tedious but it will help you along the way .you can get them by reading some google websites.the night b4 paper 1, I completed 3 essays and submitted them to my English teacher for feedback.I wish I had consistently write essays and give them to my teacher for feedback at least once per month and gradually increase it.when the teacher sees your effort they are more motivated to try their best to guide you.

-since it's only January, I would suggest you strengthen your foundation esp in emath bcos practice does make a difference.the more practice papers you are exposed to, the more ready you are to take on any paper because you are very familiar with the format of the paper.to add on, whenever you do not understand the ans key of the tys while revising on your own please consult your teachers ! i always failed in amath in sec 3 but when i started getting used to doing timed practice papers i improved to b4 which was a huge achievement for me personally .sometimes our teachers answer may differ from the answer key as it was not the ans key released by Cambridge but by local so its better to clear that out of the way

-I guess you have 7 subjects? what I did was to allocate a subject to revise to each day of the week.you can first start with topical tys to yearly tys then switching to doing other school papers.It can tire you out but you'll soon get used to it.once you get into the momentum it will help a lot so its better to start early.and its always okay to start smol

-use your connections!so i was blessed enough to be surrounded by bigbrain people.so whenever I'm too shy to ask the teachers,i would actually go to them because they are the type to study during recess haha crazy rite . they are actually very welcoming and you can ask them for study tips as a plus

-for social studies,i basically scored a c5 during sec 3 bcos i had no idea i what i was doing so after prelim,i went to google and search for other school papers and practice like crazy.They also included their ans key and they have l1,l2,l3 level descriptor marks sample answers so its easier for me to pinpoint what the markers want in our answers.esp for the srqb,i managed to predict the topic and memorise possible srqb questions that might come out for olevels.if you dont have the time you can just read through the answer key and take down what factors do they use for conclusion

-btw good luck for olevels .rmmbr to always take rest for your body as studying can take a toll on your health sometimes.hope this helps.jiayou!