Hi, I am currently a Year 12 student going into Year 13 and if I was in your position, unless you have mock exams in September, I would give myself a break for around two weeks as it is the holidays and then start to make a plan on how you will revise for the remaining weeks of your holiday and throughout the year. Once you have done this and you are happy with your timetable ensuring it is manageable and NOT too ambitious then just like others have said above you should start revising and then you should do past papers. In order to achieve Grade 9 or a high grade in ALL your subjects,you should revise throughout the whole year and enforce this near the end of Year 11,so during March and onwards. This answers your question on when to revise,now I will give you advice on the best way to revise.(GCSE's are difficult because you have a lot of subjects to revise for, HOWEVER once you do 4-5 subjects a day frequently,you will upgrade and it will be very easy for you,dw)!!!!1) You follow your timetable strictly following it,so for example if you have to revise English Language, Maths, Geography,Foodtech and RE today,then you must do the topics you assigned yourself that day and to make sure you understand what you have learnt,not memorising it but understanding it ,just like my Biology teacher says then do exam questions from CGP textguides or even from websites like PhysicsMathstutor(REALLY GOODDDDDD) and in terms of making notes, would say using a method called Cornell notes,search it up if you haven't heard of it and it is something you do in A-Levels so it is smg to consider or a method that works for you,maybe waych videos on youtube showing you good methods of notetaking f you haven't found it already.2) Take 15 minute breaks between each subject and for instance do 3 subjects in the morning for like 1 hour each and 2 subjects in the afternoon meaning that you have the whole evening off to do anything you desire. On a school day do 3-4 subjects in the evening and once again taking 15 minute breaks,BUT as on the weekend you have more time,do 4-5 subjects like on a holiday.3) Once you have revised all the content(make sure someone asks you once you complete a topic to further reinforce your knowledge) and you have completed exam questions,move onto past papers(VERY VERY VERY IMPORTANT) as they will help you to acc apply the knowledge,so this means that instead of revising,you fill that time with 1 pastpaper for each subject you do in a day and just before you do that just quickly recap your topics.4) When doing pastpapers, FIRST do it open book with your notes and then after a week or so, do it in timed conditions without your notes and then mark it with green pen being strict using the markscheme,then check what grade you would get and everytime you do your pastpaper,you want to improve and get higher.If you are in school,you can go to clubs and also ask your teachers to mark a paper every 2 weeks or if it's an essay based subject,then 2-3 essays every other week.5) Finally, I would say fit in the extracurricular activities you do and social stuff you do aswell like in the evenings or in your break,so implement this in your timetable at the start.So,there you have it a simple way to revise and when to start revising.I hope this helps,if you have any questions replyand finally I would like to say,if you ever feel unmotivated just remember this time next year you will be chilling and that you do not want to be stressing near the time of the exam saying I wish I had revised during the year because otherwise it will be a very very stressful period of time,which it should not have to be,so please follow some sort of thing like this and you will be flying high in da sky.Also, I know this is very longggg sorry but start looking at courses you want to do for university and the type of universities you want to apply for as they have GCSE specific criteria or anything else you want to do like an apprenticeship etc. and even the grades you need to infact even get into sixthform or college etc.I hope this helps and wish you good luck in the forthseeing future,hopefully you get all Grade 9's in your GCSE'sGOOD LUCK lulumillie02!!!!!