Get data from one file with multiple sheets

Hi guys!

How are you?

I need help to combine some spreadsheets from an excel file. I remember seeing another topic with the same problem, but I couldn't find it. I read some topics about it but it's not the same because normally people have one file per subject and in this case there is one spreadsheet per subject.
I have an excel file (Production.xls) in a Sharepoint folder. This file has several spreadsheets and I want to combine 12 of them that are the 12 months of the year. All of these spreadsheets have the same content. The problem is that I have to be able to separate the information by month after combining everything. It would be great if it were possible to have a column with the name of the source spreadsheet. Everything I read speaks of a column with the file name, but in this case it doesn't help me. I need the name of the spreadsheet. Any idea?