At this time, it is expected behavior that anytime you indent, it will be like the 2nd layer of that bullet point.
However, I’m wondering if the Layout feature might be of some help here then! It adds column-effects to let you have two separate areas of text within the same line, which can include where to put bullet points:
Would this work for you?
I also want to mention that since the feature is still in Beta, there may be new changes along the way. With that in mind, we’re still looking for feedback on your experience with it, so please feel free to send that over to our Product Team along with any other thoughts you have by using the feedback button at the top of the page when you click “Docs help”:
I hope this helps! Remember to mark as solved if this answers your question 
Cheers,
Jenna