How to add a cooldown to this remote event?

local script: Enables a value when the Left arrow key is pressed and Disables the value when the key is released, then makes it so if the value maintains to be true then the remote event keeps repeating and stops when the value becomes false

local uis = game:GetService("UserInputService")
local sm = game.Workspace.valfolder.shootmain --bool val
uis.InputBegan:Connect(function(input)
		if input.KeyCode==Enum.KeyCode.Left then
		print("left began")
		sm.Value = true
	end
end)

uis.InputEnded:Connect(function(input)
	if input.KeyCode==Enum.KeyCode.Left then
		sm.Value = false
			print("end left")
	end
end)

local status = game.Workspace.valfolder.shootmain
status.Changed:Connect(function()
	if status.Value then -- true
		repeat print("hi1")
			game.ReplicatedStorage.fireshot:FireServer()
				wait(0.4)
		until not status.Value
	else 
		print("done")
	end
end)

server script: Shoots a part from the player's root part and is destroyed when it touches another part. My problem is the remote event can be spammed whenever the key is spammed, how can I add a cooldown?

game.ReplicatedStorage.fireshot.OnServerEvent:Connect(function(player)
	local character = player.Character
	local shothit = game.ServerStorage:WaitForChild("shothit")
		local newshot = shothit:Clone()
		local bodyvel = Instance.new("BodyVelocity")
		newshot.CFrame = character.HumanoidRootPart.CFrame
		bodyvel.Velocity = Vector3.new(0,0,60)
		bodyvel.Parent = newshot
		newshot.Parent = workspace
		local touchconn

		touchconn = newshot.Touched:Connect(function(hit)
			if hit.Parent:FindFirstChild("Part") then
				print("hit")
					if touchconn ~= nil then touchconn:Disconnect() end
				wait(1.6)
				newshot:Destroy()
			end
		end)
	end)