I am not sure I understand your question.
If you need 3 blocks appear and disappear one after another, the easiest way to do this is with an animation.
https://www.dropbox.com/s/cyto45wyib6h4o2/loadingBlocks.capx?dl=0
The idea is to be extremely light this screen, so I don't want to use animations or more than 1 object.
I got it in a simple way.