dude just sleep now and wake up in 4 and continue to read! relax everything will be alright, I used to do this and I secured good grades
lemme share you how I used to read , I sleep at 9pm and wake up at 4 sometimes 1 or 2 it's depends by how much task I wanted to do! in early morning I have a calm and present surrounding which really helped me lot! always be chill!
it's too soon to give up. take a power nap and start again! just two more chapters!!! go for it!!!