[Easy?] When check off last child, move to parent, not to next parent

My pattern is to complete all the items of a topic, and then mark the topic completed. The easy way to do this is Ctrl-Enter on the first because it’s marked done, and the cursor moves to the second, and I press Ctrl-Enter if that is done.

When the last child is complete, I press Ctrl-Enter and it advances to the next parent. This is undesired because the previous parent has not been marked complete yet.

What I want is Ctrl-Enter to go from the last child to its parent, so I can press Ctrl-Enter and mark the parent completed. Conveniently that will move to the next sibling so no change required there.