You can use Nested Styles - which lets you control what style is applied to your parameters you set up
https://helpx.adobe.com/indesign/using/drop-caps-nested-styles.html
E.g.

Here I've set it go to the First full colon - so it Bold applies to the 'Above:"


If you delete or move the : it will change the bold
Deleted it will bold the entire sentence due to the sentencing - BOLD UP TO FIRST :

Move the Colon

And you can nest them and build on them to automatically apply styles to the parameters you need
Here I've instructed to apply italic to the end of the nested style - which is the end of the paragraph seemingly.
So it's Bold UP TO :
THEN
Italic up to end

You can build them as you see fit.