Can i get from a grade 2 to 4 in maths?

thank you so it deffo possible to go from a 6 to a 9, because the only reason why my grade is actually low is because ive been living abroad and have to learn new content, so i should learn the content first and do past papers and learn from my mistakes?

that sounds like a brill plan chloe

thank you

Ask your teachers for your maths papers back so you can have a look where you've gone wrong. Look how you've gone wrong.
Is it:
Mistake- you know how to do the question but you've put the wrong number in the equation (e.g put sin in the cosine rule and done a^2=b^2+c^2-2bcsinA instead of cosA). If you've made a mistake then you presumably know the topic, but you've just had a small slip up. Maybe have a look on one of the useful maths resources websites listed below to help with your revision.

Method- you've used the wrong method to answer the question and you've been given the wrong answer. If you've used the wrong method, have a look at the correct method and re-attempt the question. If you are able to get the correct answer then that's brill. Practice these sorts of questions using the resources down below.

Not knowing the content- Re-learn the content (using some of the suggestions listed below) and then re-attempt using the listed resources.

When you are re-learning content, make flashcards/notes on this revision and look over it frequently. Re-learning it once will NOT keep it in your brain for ever:

This shows that the more you look at the content, the more you will remember it.

Useful resources for re-learning content:
Hegartymaths (youtube) also has a website but your school needs a paid subscription- has lots of qs and it has genuinely helped
Mathswatch (paid)
Collins/CGP revision guides
Asking your teacher- they are there to help you, after all
Also there are various other maths youtubers, if you search the topic you are struggling on there is likely to be a video explaining it

Useful resources for testing your knowledge:
Corbett Maths
Mr Barton Maths
Just Maths
Maths Made Easy (also has science)
On Maths

Specimen papers (the key to success)
AQA (my spec)- http://www.aqa.org.uk/subjects/mathematics/gcse/mathematics-8300/assessment-resources
Edexcel- https://qualifications.pearson.com/content/dam/pdf/GCSE/mathematics/2015/exam-materials/GCSE-9-1-Maths-Specimen-Papers-Set-2.pdf
https://qualifications.pearson.com/content/dam/pdf/GCSE/mathematics/2015/specification-and-sample-assesment/GCSE-Mathematics-2015-SAM.pdf
OCR (the hardest in my opinion)- http://www.ocr.org.uk/qualifications/gcse-mathematics-j560-from-2015/assessment/
Eduqas- http://www.eduqas.co.uk/qualifications/mathematics/gcse/WJEC%20Eduqas%20GCSE%20Maths%20SAMs%20-%20FINAL%20(26.6.15).pdf?language_id=1
CCEA- http://ccea.org.uk/mathematics/

If you know maths inside out you will smash it and get that 9

Thanks so much. Your a great help.

But is there enough time?