Did you like Annihilation enough to try the other two?
About school work and time.... it's a tricky thing and it depends on the person but I've found that I do better when I stop and watch a show or listen to music or go out for a couple of hours and then pick up that when I just enslave myself miserably for hours non-stop. Way more efficient too.
Also, your Nadine avatar always freaks me out when these conversations are happening. I always have to stop myself from typing "your mom does care!"