Adding timer on the Messagebox

[aniyanetworks]

Hello Experts,
I would like to show some message on the Message Box, with a Timer on it. Messagebox will have 2 min countdown clock and after 2 min it will be close.

My code is here:

from tkinter import *
from tkinter import messagebox
window= Tk()

def wifiOnscript():
    messagebox.showinfo("Information!!", "This process may take up to 2 min. Please try after 2min...")

wifiOnButton=Button(window,text="WiFi-ON",command=wifiOnscript, height=1, width=22)
wifiOnButton.grid(row=2,column=0,padx=40, pady=10)

window.mainloop()

Please let me know how can I add the clock to my message box.
Thanks in advance.