For maths, I would say to do as many past papers and past exam questions as possible in order to learn the logic of answering the questions. I don't know your exam board but for edexel you could use maths genie, or a website called 1st class maths to get lots of exam practice.
try to do some grade nine only questions as well.
For english language you should do lots of past exam practice papers to really understand how to structure your answers, and for narrative writing I would recommend having some good story ideas with good descriptions and dialogue template so you can sort of mold that to the prompts that you get.
For english literature make sure to memorise key quotes and in depth analysis ( try to do more analysis than the surface level that you might be doing in class) and remember to link back to the question.
try to also do alternative interpretations as well for grade 9.
Hope any of this helped!