Custom Wait Gui Won't Work?

I'm new to coroutine.

local DoIt = true




local Dot3 = coroutine.create(function()
script.Parent.Dot3:TweenPosition(UDim2.new(.55,0,.3,0),"Out","Bounce",.1,true)
script.Parent.Dot1:TweenPosition(UDim2.new(.55,0,.4,0),"Out","Bounce",.1,true)

end)

local Dot2 = coroutine.create(function()
script.Parent.Dot2:TweenPosition(UDim2.new(.45,0,.3,0),"Out","Bounce",.1,true)
coroutine.resume(Dot3)
script.Parent.Dot1:TweenPosition(UDim2.new(.45,0,.4,0),"Out","Bounce",.1,true)
end)

local Dot1 = coroutine.create(function()
script.Parent.Dot1:TweenPosition(UDim2.new(.35,0,.3,0),"Out","Bounce",.1,true)
coroutine.resume(Dot2)
script.Parent.Dot1:TweenPosition(UDim2.new(.35,0,.4,0),"Out","Bounce",.1,true)
end)



while DoIt do
coroutine.resume(Dot1)
wait(1)
end

What i'm trying to do is, the first "Dot" is suppose to "Bounce" and when its up in the air, the second one should start to "Bounce" while the first one continues to go down. Why won't it do that? .. No Output,

The 2nd and third Rise. Then nothing happens.