How to loop through columns in DAO Recordset as each table is looped through in Access?

Per the following code, I'm trying to loop through a long listing of tables linked to SQL Server and search out a value in every row and column... if it finds the value its looking for it puts in a temp table the table name and field name so that a person can go there to look at more information.  The problem is using DAO I don't know how to determine the number of columns which will be different per each table.  How may I rearrange below to determine number of columns so I can reiterate through the rs.Fields(x) to look up the values?

Again, I know what's wrong with this code already - I just don't know the syntax to loop through the columns as each table comes through....   A rearrangement of the code below would be ideal versus a mere explanation as to what is wrong.

Thank you sincerely!

Public Sub Find_This(sValue As String)

  Dim db As DAO.Database
  Dim docdef As DAO.Document
 
  Dim sSQL As String
  Dim rs As DAO.Recordset
 
  Dim sTable As String
  Dim sField As String
 
  sSQL = "DELETE * FROM [tblFound]"
  CurrentDb.Execute sSQL
  DoEvents
 
  Set db = CurrentProject.Application.CurrentDb
    With db.Containers!Tables
    For Each docdef In .Documents
   
      sTable = docdef.Name
     
      If "tblSQLTableNames" <> sTable And "tblFound" <> sTable Then
       
        sSQL = "SELECT * FROM [" & sTable & "]"
        Set rs = CurrentDb.OpenRecordset(sSQL)
        Do Until rs.EOF
       
          'instead of
          sField = rs.Fields(0)
       
          If sValue = sField Then
         
            sSQL = "INSERT INTO [tblFound] (FieldFound, TableFound) VALUES ('" & sField & "', '" & sTable & "')"
            CurrentDb.Execute sSQL
            DoEvents
           
          End If
         
          rs.MoveNext
        Loop
        rs.Close
        Set rs = Nothing
       
      End If
    Next docdef
    End With
    db.Close
  Set db = Nothing
 
End Sub