I'm like the opposite to you!
I'm good at English lit but I absolutely dread English language
If i were in your position, I would make a mind map analyzing each key quote and by analyse mean every single thing from the punctuation of it to structure...7
In the actual exam, what i do is like down the margiin i write stuff or key terms i woudl need to include in my work.
For example if i was analyzing a christmas carol, i would have like interpretations, structure,punctuation,caricature,context..
Also knowing those extra language/structural device will really show off your skills
e.g::syntax, diction,synesthesia,caesura, enjambment..)