Nvidia Optimus and power consumption concern

I recently starts using a Fedora 39 on laptop with integrated and dedicated GPU.
I want to be able to run on one charge as long as possible.
Becouse it i want to use integrated GPU and turn on dedicated only when needed (games prymaly).

I find that Nvida has something called Optimus that allows exactly this.
But it seams when i running fedora battery drains faster.
And when i open Nvidia X server aplication it shows that the GPU has 53˚C (i dont know if laptop has shared cooling for CPU).

My question is simple.
Is there any way to check if Optimus works?
And is there something that can lower the power consumption?