deeper drilldown on waterfall chart?

PBIX File here: https://www.dropbox.com/s/rbjoqspdjdmtquq/Power%20BI%20Forum%20Sample.pbix?dl=0

I changed from the internal date hierarchy table to one that's described here: https://www.sqlbi.com/articles/reference-date-table-in-dax-and-power-bi/

I'm trying to figure out how to drill down on my waterfall chart on Page 4 of the BI file linked above to time frames more frequent than annual and I'm at a loss.  I'm pretty sure I was able to do this with the embedded date hierarchy, but I've only been using BI for a few weeks so still very green.

Thanks