I hope the title makes sense - I'm a college student and I've been meaning to digitize my assignment planning. I, for the past two years, have been using this specific brand of planner I love that is split panes for Due and To-Do, so that I can track side-by-side what is due and what I should do. I've tried 100's of digital apps, but none seem to be able to do this, or they do not have a longform view to see days ahead i.e. Todoist will only let you set a due date, which places the task on the day it is due with no ability to move it up.

Can someone help me find a system I might be missing to organize myself digitally?