Number of Points on a Report

I would like to create a report that shows me the current avamar utilization, as well as the utilization for the past 3 months, thus in total I only want to see 4 data points on the report.  I know that I can adjust the "number of points" under preferences, although the minimum is 5, but I want this to only be applicable to this 1 report, is that possible?

Thanks