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)