It's really hard to remember due dates without professors reminding you constantly. Here are some ways that help me.
1. I keep all the assignments open.
Me when I get another assignment.
If a professor is using a Canvas dropbox, I will have the assignment open on a tab on my laptop until I turn it in. It just helps me to quickly see how many assignments that I have to complete at one time. By organizing my tabs I can also prioritize which assignments I should complete first by moving the corresponding tab to the furthest left position.
2. I use the calendar setting on Canvas.
When you see all the assignments you have to complete.
If it is a busy week and I know that I have a ton of assignments, I like to keep a tab open on my laptop for the calendar on Canvas. I typically will always have this tab open, even if I have already pulled up all of the assignment pages. It just ensures that I can easily access what is due.