Unpivot / Pivot help needed

My data sample:

Here is my solution:

let
    Source = Excel.CurrentWorkbook(){[Name="Table2"]}[Content],
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Column1", type text}, {"Column2", type any}, {"Column3", type any}, {"Column4", type any}, {"Column5", type any}, {"Column6", type any}, {"Column7", type any}, {"Column8", type any}, {"Column9", type any}, {"Column10", type any}, {"Column11", type any}, {"Column12", type any}, {"Column13", type any}}),
    #"Transposed Table" = Table.Transpose(#"Changed Type"),
    #"Promoted Headers" = Table.PromoteHeaders(#"Transposed Table", [PromoteAllScalars=true]),
    #"Changed Type1" = Table.TransformColumnTypes(#"Promoted Headers",{{"Fiscal Year", type text}, {"Fiscal Month #", Int64.Type}, {"Fiscal Month", type datetime}, {"Flooring", Int64.Type}, {"Scaffolding", Int64.Type}}),
    #"Unpivoted Other Columns" = Table.UnpivotOtherColumns(#"Changed Type1", {"Fiscal Year", "Fiscal Month #", "Fiscal Month"}, "Supplier", "Value")
in
    #"Unpivoted Other Columns"