Not sure if it will work for your true set up, but you might
try a data scaffold of just a single running column of all of the months
you are interested in. Then you would join this to you data
such that all the months of the scaffold would be included.
Here is an example:
I might also recommend that you remove your workbook from
this thread and post one with fake data.
Thank you for your help, Swaroop. I'll give this a shot.