how can i revise multiple subjects and get 8-9s?? gcse mock rant-

So i recently finished my mocks and they didnt really go well becuase i was so focused on one subject ( science ) that i didnt have time for other subjects. My revision technique was wrong as i only started 2 weeks before my mocks and thats basically 7 months of content of 8 subjects in that period of time. I crammed whole topics e.g. quantatiive chem in 1-2 days and that meant nothing stuck to my head, e.g. equations. Even if i know the content, the exams ask it in quite a technical way like the equation of elastic potential energy but they tell you to calculate the spring constant which i found quite difficult. Due to sticking to just one thing, i couldnt revise for the other subjects e.g. french, english, maths and i did terrible in them, and science didnt go great either since nothing stuck in my head.
I know I'm only in year 10 and that the first set of mocks is only a taster session for the real thing, but im scared that i cant increase my grades in time for the real thing ( I have a little over a year, but i need to cover 9 subjects in depth and idk how!)
you can see my gyg for the subjects im taking, but im still a bit disappointed in myself. i understood my mistakes for revising so late, but i dont know how to improve myself. before the exam my head just goes blank and i start to panic or get upset the night before. idk how to controll my nervousness.
any tips would be great and im sorry this sounds quiet blunt, im a little down in the dumps rn-
thanks for reading!

Hey! From what I've read, it seems you may be interested in revision schedules - planning out your timings for each subject and breaks.
This helps with organisation and makes you feel confident on what to revise next.
Ex.
Monday 3:00pm - 4:30pm - Biology Meiosis + Mitosis revision
5:00pm - 5:30pm - Classical Civilisation Iliad flashcards
etc...
I hope everything goes well! Good luck.

So i recently finished my mocks and they didnt really go well becuase i was so focused on one subject ( science ) that i didnt have time for other subjects. My revision technique was wrong as i only started 2 weeks before my mocks and thats basically 7 months of content of 8 subjects in that period of time. I crammed whole topics e.g. quantatiive chem in 1-2 days and that meant nothing stuck to my head, e.g. equations. Even if i know the content, the exams ask it in quite a technical way like the equation of elastic potential energy but they tell you to calculate the spring constant which i found quite difficult. Due to sticking to just one thing, i couldnt revise for the other subjects e.g. french, english, maths and i did terrible in them, and science didnt go great either since nothing stuck in my head.
I know I'm only in year 10 and that the first set of mocks is only a taster session for the real thing, but im scared that i cant increase my grades in time for the real thing ( I have a little over a year, but i need to cover 9 subjects in depth and idk how!)
you can see my gyg for the subjects im taking, but im still a bit disappointed in myself. i understood my mistakes for revising so late, but i dont know how to improve myself. before the exam my head just goes blank and i start to panic or get upset the night before. idk how to controll my nervousness.
any tips would be great and im sorry this sounds quiet blunt, im a little down in the dumps rn-
thanks for reading!

I think the main way you get things into your memory is definitely through long term revision. It's the one thing I regret not doing for some of my subjects, like my DT NEA and my German and French Speaking exams that I just had. Just keep revising over time, little and often is what my teachers say. Maybe 1 hour a week for a subject you're not good at. That's what I did for maths and got myself up from a 5-6 in year 9 to 8-9 in year 10 and even now in year 11.
TLDR: You have lots of time, so use it, even if it's a little, for revision. Good luck for next year!

Download all the mark schemes - they will show you the specific answers you need. Revise from these. Also examiner reports, exemplar answers and commentaries.