Is it possible for me to jump from a 6 to a 9 for more than one subject right now?

Hi I’m asking this because I got my feb mocks back and I got more 6s than I was expecting and I want to change it to a 9s /8s I remember doing a week of just history and I jumped from a 7 to a 9 is it possible doing it for the other subjects? Tips would be very much appreciated 😭

Yes you can. Which subjects did you get 6s in?

Chemistry , geography and computer science

Would you like some tips on how to revsie them? I got 8s in all.

Yes pls 😭

No worries.
Chemistry: learn the content - i suggest CGP books if you have them. Then doing past papers from PMT/ revision world. DO ALL the past papers, if you re-do a question again and again and if its a question who always do wrong, it will itself go to your long-term memory.
Geography: omg i hate this subject ☹️ I did so much revision and only just scraped an 8 in my mock. I do edexcel b just try to learn and memorise content - my teacher told me to make flashcards and put like 2-3 points for each question / topic, so im not revising all the uneccessary stuff aswell. And ofc do past papers.
Good luck! Lmk any other questions.
Computing: I got a 6 in year 10. If you do OCR then i would suggest this website OCR GCSE Topic List | CSNewbs. Also, for programming do past papers from the recent years from revision world. You need to use logic for paper 2, so also do some simple programs.