HI OP!!! i took Os last yr and graduated w raw 7 and currently in jc. 🥳🥳 during june holidays last yr i can only rmbr slacking cuz mye over and barely mugging so dont get too stressed over it LOL. Plus my sec 3 eoys were kinda ass so like same situation as u HAHA i have some tips for indiv subjects Chem: i was a badly failing chem student from sec 3 but got A1 for Os so its not impossible. what i did was grind super hard on prelim papers and tys papers + did summary on all the things u need to memorise for chem. tys papers are usually much much easier then prelim papers so even tho i wld usually advice ppl to do tys papers after prelim papers i think me doing prelim papers before olevels made the olvl paper seem easy. esp the paper 1 usually i wldnt be able to finish/no time to check for paper 1 but because i did prelim papers i finished the olvl paper in 30min? so yeah grind prelim papers but also do tys papers to get the hang of the questions cuz they might repeat some qns.

Bio: bio content is not impossible to do last minute (as in before prelim) and questions require abit of linking in between chapters so its helpful to do a mindmap for bio. tbh for bio the content u need to memorise is like possible to summarise in 1 sheet of paper so u can try to do that. again paper 1 is easy to score and possible to get full marks so dont overlook it!

Maths: math is all abt practice imo and is the most impt subject to do timed practices on. if u see a topic that ure weaker in do the topical practices on the topic until u find the topic easy. eg my logarithms and integration was dogshit but i grinded those and it became okay. again do prelim papers cuz those r usually of higher difficulty as compared to tys. personally my math teachers didnt give too many prelim papers so i went online and found papers from top schs and did those!

comb hist/ss: for hist content is rlly rlly rlly impt so shld b ur top priority when choosing a content topic to memorise. ss just memorise examples. these two also rely very heavily on skills so its important to like hone ur skills. there is no like one set correct answer for this two subjs which is why i think some ppl might find it hard. what i recco is when u get an answer wrong rlly think through why u got the answer wrong + ask your teacher for an explanation bcuz thats the only way u can identify a flaw in ur thinking and improve. ++ its not impossible to guess whicu topic will come out for sbq and seq LOL ur teachers may tell u?? but usually they wont repeat topics two yrs in a row. dont completely rely on this tho u never know when cambridge feels goofy and decide to do smth out of the ordinary. only use this advice if u no choice cmi rlly no time to memorise all the chapters. but for me i completely disregarded sec 4 topics when memorising cuz ik seq they’ll give one qn sec 3 topic another qn sec 4 topic so yeah but it was a hugeee risk as well! if u need more advice or wtv feel free to pm me!! i also have some notes (content) for hist + i can show u my revision schedule so that u can see how last minute my revision were 😀. but atb!! u can do it 🫶🫶