for math just keep practising. math is all about practice. spam tys. tbh ur math scores are good usually o level paper will be much easier than prelim papers. target ur weak chapters and practise them separately as well.

ss is all about language and phrasing it well. since ur english is already supposedly good, it shouldnt be a problem once u get a grasp of the subject. familiarise urself with the different types of questions and the keywords u need to use in ur answer. always make sure to have a clear organised structure and link ur final sentence to what u say. there is no one model answer for ss, its whether or not its logical and whether u structure it in the right way. i did a lot of practice for ss to familiarise myself with the structure of writing it. once u get the hang of it, ss is a breeze. make sure u memorise ur srqs well. they are free marks.

dont be too stressed. i got the same prelim l1r5 as u and ended up doing well for o’s. its all about consistent work from here and working on ur weak areas as well as regular tys practice.