Is there a way to get my daily note to only include the summary aspect of the meeting and not the entire document?
Yes. Change this: tR += "!\[\[" + final_name + "\]\]" into this: tR += "!\[\[" + final_name + "##your-heading\]\]"
Then, go to the template that creates a new meeting note and add the your-heading section to it. This will be your meeting summary. Obviously name it whatever you want but remember to reflect that change in the code.