Here's what my graph look like:

My client wants the blue line to come closer to the other lines. Unfortunately, I've been searching for the solution for a couple days and all I got are how to change the min/max value and how to customize the ticks. So I was wondering if it's possible to do so? If not, are there any alternatives?
Ps. I found a similar question posted seven years ago, not sure if it's possible now.