Word has a handy feature that is doubly handy when building dynamic automated documents: Keep with Next.

You can use Keep with Next on any of your sections or paragraphs. Start by making a Token Point somewhere at the beginning of your Flow, set it's Label to "Keep with Next" and its value to |||KEEPNEXT|||.

This will make it available in Paragraph and Section Points - you will see this on the left with an Orange highlight to differentiate it from Questions (green).

You can put the token anywhere in the Body of any Paragraph or Section Point, we usually put it at the beginning just because it looks nice and tidy. So, add your token, then your text into your paragraph or section point. You shouldn't have the Keep with Next token in its own paragraph point because this will create an extra space where you don't need it.

As with all features, make sure you test your Bot thoroughly.  

You may want to test "Keep with Next" by adding extra line breaks above the Paragraph or Numbered Section until you see how it behaves at the bottom of a page when the next element is pushed onto the next page.