Python3.10 & Pygame, Timer not counting down in a pygame window

Question

I'm trying to make an app where you enter in the minute value then a window appears and counts down from the amount of minutes you put in. The window opens and shows how many minutes you entered but it does not count down. I am new to python so if you can fix my problem please leave the modified code in your answer. Thanks.

import pygame
import time
import sys

pygame.init()

q = True
WIDTH = 800
HEIGHT = 600

clock = pygame.time.Clock()

myFont = pygame.font.SysFont("monospace", 35)


def countdown(t):
   t *= 60
   while t:
       for event in pygame.event.get():
           if event.type == pygame.QUIT:
               sys.exit()

       min, sec = divmod(t, 60)
       timer = '{:02d}:{:02d}'.format(min, sec)

       screen = pygame.display.set_mode((WIDTH, HEIGHT))
       pygame.display.set_caption('PyTimerTwo,  By: ChanceMeteor515')
       screen.fill((0, 0, 0))
       text = str(timer)
       label = myFont.render(text, True, (255, 255, 255))
       screen.blit(label, (WIDTH - 200, HEIGHT - 40))

       pygame.display.update()
#
   print("\nTime's Up")
   time.sleep(5400)


t = input("Enter Time In Minutes:")
countdown(int(t))

while q:
   for event in pygame.event.get():
       if event.type == pygame.QUIT:
           sys.exit()
       if event.type == pygame.KEYDOWN:
           if event.key == pygame.K_h:
               pygame.mouse.set_visible(False)
           elif event.key == pygame.K_ESCAPE:
               sys.exit()


clock.tick(120)
pygame.display.update()