Only answering half of the essay question

Hi guys.

Ok so, my mum has cancer so I have extreme special circumstances because i am basically her carer for the time being. This essay is incredibly late, but that doesn’t matter really. As long I submit it before Jan 5th, it’s fine. After Jan 5th, I’ll have to resubmit it in the summer.

I’m struggling. The course content is a LOT. Basically, if my question is

“How does book X and book Y challenge the perception of…”

and I only write about X and completely ignore Y, is it still passable? Like if all 2000 words are about X, can I still pass my essay? Do I have to write about Y? I just can’t even imagine having to learn about another text right now. Any ideas? I’m panicking

Thank you