Combo chart with multiple filtered lines

Hej Power BI community,

I am trying to compare multiple forecasts with each other including the actuals as columns. 

My data looks as following:

...

So basically, any Year Month combination that hs already passed during planning has the actuals instead of a forecast. 

Now what I would love to do is have one line for each planning period (forecast) and one column per month for the actuals. I created a new actuals using this formula so it does not add up different months actuals. 

m3 Single = Divide([m3 Actuals], IF(ISFILTERED(Table[Planning Period]), COUNTROWS(VALUES(Table[Planning Period])),0))

This is pretty much the outcome I want:

To achieve this I had to create one measure per forecasting round. Also, each measure I do not have active or that is filtered out still gets shown on the legend. This is the formula used:

m3 2021 Sep = CALCULATE([m3 Forecast],Planning Period[Planning Period]="2021 Sep")

Since I have atleast 20 planning periods per year I would love not to create a measure for each line. Is there any option to do this?

I found one visual by modular GmbH that does this. Sadly it always aligns the actuals with a different Axis and I cannot seem to get the axes to align.

Thank you very much for your help!