Is it possible to make light doesnt stack?

When you put 2 lights too close, they will “stack” and get brighter. That’s exactly what I don’t want, so I can control my sprites (2D game) overall brightness.

You probably already solved this (mainly because this post was made almost 6 years ago), but for anyone who still has this problem, there is a little tick for each light called “Alpha Blend on Overlap.” If you check that on, that should fix the problem!