Seeing my students' weekly progress by minutes spent or levels gained in the Express Course

I want to grade my students weekly in my LMS (in my case, Google Classroom) for their weekly work in the Express Course I put them on.

I want to give them 30 points if they do either
a) at least 10 levels a day x 4 days = 40 levels/week
or
b) spend 30 minutes a day x 4 days = 120 minutes/week

However, I find it difficult to impossible to track levels/week or minutes/week using the Progress tab of the Teacher Dashboard for the course.

How can I manage to track their minutes and levels in a simple summary way, so that I can grade their work on a scale of (in my case) 1-30 each week?

Thank you all.