How to set time delay in VB Script calling an excel macro code

Hi,

I have an excel macro that automate loading of data. I have a lot of link object in my pwerpoint dashboard which the data is came from my excel. the issue is I have encountered a message xxx.xlsm alreeady exist in this location do you want to replace. after selecting yes or no or cancel Excel is still active running  in task bar that i need to terminate.

I need to set a delay in my vb script after calling the excel macro module "Getfile" to finish first all excel activities before doing the save , close,  quit. Thank you very much. your help is very much appreaciated.

Here is my vb script

Dim xlApp
Dim xlBook
Set xlApp = CreateObject("Excel.Application")
Set xlBook = xlApp.Workbooks.Open("C:\Users\Sample\Desktop\Dashboard\Dashboard.xlsm", 0, False)
xl
App.Run "GetFile"

---Place it here codes for the delay
---need to delay 1 or 2 mins before saving and closing.
xlBook.Save
xlBook.Close
xlApp.Quit
Set xlBook = Nothing
Set xlApp = Nothing