In my opinion, all your GCSEs are important, so you should try and do as well as you can in ALL of them, even if you personally don’t see the importance.
However, language is the subject you actually need to pass, alongside math, so I understand if you want to prioritise that subject, and getting anything between a 5-9 be good for any uni (other than maybe Oxford, but even then, as you have mostly of your grades are 7-9, one or two 5/6 wouldn’t really matter as long as you write a good personal statement and ace your entrance exam, so don’t give up!)
But I would really recommend not giving up on English literature, especially since you have a year until your GCSEs. I got an 8 in English Literature for results day 2024, and I too really struggled with it throughout Y10-Y11, normally getting low 6s and an occasional 5 (it wasn't until my final mock I got an 8 and a 7 for my Macbeth and Jekyll and Hyde essays!)
So, here's some advice that might help you.
Flashcards: get some flashcards and write a quote, then highlight and add your analysis (metaphors, similes, etc.) to them. Do this for as many quotes as you can, and organise them into themes, characters, etc. This was useful for active recall to help learn analysis to write about in the exams.
Content sheets: My teacher gave my class context sheets for all the books and the poetry anthology we studied, so perhaps ask your teacher if they can provide something similar. If not, get pieces of paper in whatever size you see fit, and write down all the context for all the texts you are studying. This will make it easier to revise because you have one piece of paper to refer to when revising context. You could also do these on flashcards as well if you find that easier.
ESSAY PLANS/PRACTICE!!!!: I know, I know, this one is really annoying. But it really does help! I’m telling you, if you try to write as many essays/plans for as many themes and characters as possible, you can then learn them off by heart and regurgitate them in the exam. This will save you a lot of time planning within the exam and will also make you feel calmer because you don’t have to worry about coming up with ideas off the top of your head since you’ve already prepared the analysis and context before the exam! I did this much more for my history exams than I did English, and I got a 9 in history! So, I'm TELLING you this really does work, and if I could go back, I'd tell myself to do more of it!
Other than that, look on YouTube to see how others have revised for English literature, as this may be more helpful than the examples I’ve given.
Good luck with your GCSEs!