Dynamically Change Column Displayed name

Hi

I have a table in SQL that get's refreshed at the start of every month which has the following columns 

CustomerID - R6 - R5 - R4 - R3 - R2 - R1 

R1-6 represent their spend classification in text in regards to the current Month - For example today's date is 4th of May, 2020 then R1 represent Classifications in April and R2 for March etc etc.  

Some example data

10000000 -- High - Low - High - Low - High - Low

10000001  -- Low  - Low - Low -Low -Low - High

Once I Imported this table into powerBI I can display such information in a table (Visual)

-- However I want the column names  shown in the table to be have 202004, 202003 displayed instead of R1 - R6.  

1.) If I change the underlying sql script so that the column names are changed dynamically at the start of every month then it won't refresh because the same column names cannot be found by next month in the displayed table.

2.) However if I leave it at R6-1 then I have to go to the displayed tables and changed the column names one by one every month. 

Is there a more intelligent way of doing it?

Thanks

Rigel