@GrapeApe561,
I think these two videos below will give you what you need to solve this one:
https://forum.enterprisedna.co/t/cumulative-totals-only-up-to-specific-dates-dax-tutorial-for-power-bi/2987
https://forum.enterprisedna.co/t/show-actual-results-vs-targets-only-to-last-sales-date-dax-cumulative-totals/2968
I hope this is helpful.