Reference a query in the source step

Hello,

I would like to reference a query or a parameter in the source step. I am using sharepoint as my data source. I would like to get the current month and year value that changes every month (dynamically) in my source step. The format I would like Year-Month (Ex: 2023-10)

What I would like to achieve 

= Excel.Workbook(Web.Contents("www.mysharepoint.com" +  "Current Month and Year Parameter" + "FileName"), null, true)

I have made a query that gives me the value but I don't no how to reference it in the source step, here is the code for query.

let
currentDate = Date.From(DateTime.LocalNow()),
Custom1 = {currentDate},
#"Converted to Table" = Table.FromList(Custom1, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
#"Split Column by Position" = Table.SplitColumn(Table.TransformColumnTypes(#"Converted to Table", {{"Column1", type text}}, "en-CA"), "Column1", Splitter.SplitTextByPositions({0, 7}, false), {"Column1.1", "Column1.2"}),
#"Removed Columns" = Table.RemoveColumns(#"Split Column by Position",{"Column1.2"}),
#"Renamed Columns" = Table.RenameColumns(#"Removed Columns",{{"Column1.1", "Date"}}),
Custom2 = {#"Renamed Columns"}
in
Custom2

Thank you in advance for the help,

Abhinav