Group projects where you do all the work teach you something important: how to talk before you burn out.

The pattern usually runs the same way. You notice the gap, cover it quietly, resent it, and say nothing until the resentment arrives all at once at the end. By then it is too late to change the project and too late to be reasonable about it. The lesson is about timing rather than about other people, because said early the same thing is a simple request and said late it is a grievance.

On the next group task, raise it in the first week while it is still a scheduling matter. Who does which part, by when, in writing where everyone can see.