Yes, I agree. Online instruction is at its most challenging when encountering those students who, for whatever reason, fall behind.
It’s our responsibility as on-line instructors and facilitators to encourage these students to return to the fold.
We don’t often succeed, unfortunately. However, we must make the effort, as we would in a face-to-face learning environment.
I find that persistent encouragement through email and open-forum discussions helps to re-build the confidence of students—as well as offering them the opportunity to improve the quality of their work.