Delay between attacks using Touched event?

Hello i am using the .Touched event to deal damage to players from a npc

here is my code

local HumanoidRootPart = script.Parent.HumanoidRootPart

local attacking = false

local function DamageFunc(humanoid)
	print("runnning")
	wait(1)
	humanoid.Health = humanoid.Health - 10
	attacking = false
end

local function Damage(player)
	local h = player.Parent:FindFirstChild("Humanoid")
	if h and attacking == false then
		DamageFunc(h)
		attacking = true
	end
end

HumanoidRootPart.Touched:Connect(Damage)

But how would one delay an attack so that it only calls after the first attack finished? because the code i use now either just constantly attacks or stacks up.