If then statement to control when the script runs

Hi,

I have a small problem, I have a script in worksheet change sub, However I added a piece to sort the columns. Is there a way I can have the sort not take place till after the data is entered into range "B"

As it is now the script runs as soon as the users enters anything in range "A"

Thank You, Mike

Private Sub Worksheet_Change(ByVal Target As Range)
    
    
    ActiveSheet.Unprotect "Password"
   
    If Target.Cells.Count > 1 Then
        Exit Sub
    End If
    On Error GoTo ErrHandler:
    If Not Application.Intersect(Me.Range("A5:B100"), Target) Is Nothing Then
        If IsNumeric(Target.Value) = False Then
            Application.EnableEvents = False
            'Target.Value = StrConv(Target.Text, vbLowerCase)
            'Target.Value = StrConv(Target.Text, vbUpperCase)
            
            Target.Value = StrConv(Target.Text, vbProperCase)
            Application.EnableEvents = True
        End If
    End If
ErrHandler:
    Application.EnableEvents = True
    
'Part 2 
        Application.ScreenUpdating = False
                  
        Range("A3:B100").Select
        Selection.Sort Key1:=Range("A3"), Order1:=xlAscending, Header:=xlGuess, _
        OrderCustom:=1, MatchCase:=False, Orientation:=xlTopToBottom, _
        DataOption1:=xlSortNormal
 
        Application.ScreenUpdating = True
            
           
    
    ActiveSheet.Protect "Password"
    
End Sub