How would I make the timer "minutes:seconds" instead of just seconds?

Here is the script that I'm working with:

ServerStorage = game:GetService("ServerStorage")
ReplicatedStorage = game:GetService("ReplicatedStorage")
Players = game:GetService("Players")

Maps = ServerStorage:WaitForChild('Maps'):GetChildren()
Status = ReplicatedStorage:WaitForChild('Status')

while true do
	
	local Countdown = 10 -- Intermission Time
	
	repeat wait(1)
		Countdown = Countdown - 1
		
		Status.Value = 'Intermission : '..Countdown
	until Countdown <= 0
	
	
	
	Status.Value = 'Choosing Map.'
	
	local ChosenMap = Maps[math.random(1, #Maps)]:Clone()
	local Spawns = ChosenMap:FindFirstChild('Spawns'):GetChildren()
	local RandomSpawn = Spawns[math.random(1, #Spawns)]
	
	wait(5) -- little pause, make this as long as you want
	
	ChosenMap.Parent = workspace
	Status.Value = 'Map chosen, teleporting players.'
	
	wait(2) -- little pause, make this as long as you want
	
	
	
	for _, Player in pairs(Players:GetChildren())do
		if Player.Character and Player.Character:FindFirstChild('Humanoid') then
			Player.Character.HumanoidRootPart.CFrame = RandomSpawn.CFrame
		end
	end
	
	Countdown = 3 -- Starting Round In, make this as long as you want
	
	repeat wait(1)
		Countdown = Countdown - 1
		
		Status.Value = ' Round Starts in : '..Countdown
	until Countdown <= 0
	
	Countdown = 10 -- Game Time.
	
	repeat wait(1)
		Countdown = Countdown - 1
		
		Status.Value = 'Time Left : '..Countdown
	until Countdown <= 0
	
	
	
	for _, Player in pairs(Players:GetChildren())do
		if Player.Character and Player.Character:FindFirstChild('Humanoid') then
			Player.Character.Humanoid:TakeDamage(2000)
		end
	end
	
	ChosenMap:Destroy()
	
	Status.Value = 'Round Ended, waiting for new game.'
	
	wait(4) -- little pause, make this as long as you want.
	
end
ServerStorage = game:GetService("ServerStorage")
ReplicatedStorage = game:GetService("ReplicatedStorage")
Players = game:GetService("Players")