Check out Riipen Academy for our best practices.
In brief, we recommend:
Kicking off your project with a virtual meeting between yourself and the student team. The educator may want to be in attendance.
Schedule at least one more meeting at the project mid-point.
Check in periodically if you don't hear from the students every other week.
Tell the students which communication channels you prefer.
Make sure they understand the project scope, and update the content to address any misconceptions.