Consolidate Value Columns into One Value Column based on a condition

Hi all - I am working to transition our financial statements into PowerBI. We use Netsuite for our Income Statement Actuals reporting. 

The problem I am running into is that the monthly actuals are accumulated in side by side columns. Meaning, there's not one consolidated value column I can reference when creating measures. See screen shot below.  

I'm looking for a method that can consolidate the columns, but still have an indicator I can reference to seperate the data by month. Anyone have a solution for this? In the past we were preforming a SUMIF based on each column, but could easily drag that. I would really like to avoid having to create measures for each individual line item for each individual month.