Download template asset before instantiation

Hi,
I have around 10-12 levels in my game. Each level is stored as template. Now I want to dynamically load each level. Suppose I want to play level 3. The game should first download assets related to level 3 and then loads the level. I have turned off the preload for level 3 and it is not including that level in initial loading time but I don’t want the level to stream because it looks a bit odd. I want to download the level first and then display that level.