[Storyline Block in Rise] Do I have to create new Storyline project for each of my Storyline block?

Hi! I'm currently building a course in Rise. However I will have to insert several Storyline Blocks here and there within the module. Do I have to create new project in Storyline every time I want to insert a new content in the Storyline Block? Can I create one project that has 10 slides, but each slide is published into a different Storyline block? 

So far I ended up with at least 10 Storyline project files, each only contains 1 or 2 slides for each of the Storyline blocks I have.

Did I do it wrong? Any tips or suggestions is greatly appreciated!