Remove White Space Above Header on Sidebar Template

Hi, I’m trying to figure out how to remove the white space above the header specifically when I’m using the Sidebar Template.

When I use the Default Template on a page (which I am toggling by using the Template drop-down menu under Pages > Quick Edit), I don’t have this issue (I believe at some point I found a setting on my child theme which fixed this for the Default Template, but of course I don’t remember what it was…). I can’t seem to find any settings in style.css or any of the php files that allow me to adjust the white space above the title for the Sidebar Template.

Here are some images that illustrate what I’m trying to change (it’s the same page using the Sidebar Template vs the Default Template):
Sidebar Template – https://www.flickr.com/photos/22042186@N08/7590997200/
Default Template – https://www.flickr.com/photos/22042186@N08/7590997360/

The website is https://www.samanthadurante.com – right now I have the Default Template chosen, but I can switch it if it would help anyone who’s looking at this.

Any tips would be greatly appreciated! I am new to WordPress, so I can use all the help I can get. ?? Thanks!