Line graph with two time markers

I am working on a budget vs actual reporting dashboard. We do monthly planing, so we want to be able to see how the whole year is planned out (ie there may be a planned spike in November) but only want to see the actuals up to the selected month. I have every other visualization interact with the month & year drop down, but if I do so for the line graph I just have two dots.

Is there a way to have the budget show for the entire year but limit the data shown for actuals? Without the beforementioned limitations, there are financials posted to months that haven't closed yet, causing issues like below where they have negative expenses for March, which is not true.

Budget (black) needs to show 12 months of projection where Actuals (green) should only show up to the month selected

Here is how our old graph looked in excel:

Old excel graph (it ends at selected month)

And the work around with a separate hidden pivot chart; essentially erroring out the actuals after the selected month:

Thank you!

FalconBudget