Gui working only on first click(Doubting boolean wrongly used)?

I'm trying to do a switch thingy for a game. Basically how it works is that I have 2 squares on the sides and 1 bigger than the other 2 in the middle. Then there is 2 buttons, "<" and ">". Clicking < will tween the right square to middle, middle to left and left will just teleport tothe right side. Clicking the other will do this in reverse.

The BKG is a frame that is parent of the script. The frames, left, middle and right, are in the BKG and the buttons are in there too. |StarterGui| {|BKG| {|Frame 1| <- left |Frame 2| <- middle |Frame3| <- right |Script| <- this script |Next| <- ">"-button |Prev| <- "<"-button

local BKG = script.Parent

local t =
{
	BKG["Frame 1"],
	BKG["Frame 2"],
	BKG["Frame 3"]
}

local n,p = BKG.Next, BKG.Prev

local stats =
{
	{position = UDim2.new(0, 10,0, 40), size = UDim2.new(0, 20,0, 20)},
	{position = UDim2.new(0, 35,0, 35), size = UDim2.new(0, 30,0, 30)},
	{position = UDim2.new(0, 70,0, 40), size = UDim2.new(0, 20,0, 20)}
}

local done = 
{
	false,
	false,
	false
}

function tween_right()
	for i,f in pairs(t) do
		local new = i + 1
		local tween
		
		if new > 3 then
			new = 1
			tween = false
		else
			tween = true
		end
		
		if tween then
			t[i]:TweenSizeAndPosition(stats[new].size,stats[new].position)
			spawn(function()
				while t[i].Size ~= stats[new].size and t[i].Position ~= stats[new].position do
					wait()
				end
				done[i] = true
			end)
		else
			t[i].Size = stats[new].size
			t[i].Position = stats[new].position
			done[i] = true
		end
	end
	while not (done[1] and done[2] and done[3]) do
		wait()
	end
	for i,f in pairs(t) do
		local new = i + 1
			
		if new > 3 then
			new = 1
		end
		
		t[new] = f
	end
end

n.MouseButton1Click:connect(tween_right)

if you would find the solution to this problem, I would really appreciate it

Thanks,

SwaggyDuckie