Had a very similar headache in my final year project, people doing their own version of the same task and me only finding out after deadlines slipped. What fixed it wasn’t more reminders but a simple shared tracker where every task had a name, status, and next update date so nothing stayed invisible. I also learned from reading about structured coordination approaches in this piece mining sector mention that consistency and visibility matter more than pressure. After that I stopped chasing people and started managing flow, which reduced half the chaos fast.