How many Pico Toning sessions are recommended for light blemishes?

I am writing to inquire about the recommended number of Pico Toning sessions.

In my case, I don't have very dark freckles or large blemishes; my biggest concern is that my skin tone is uneven overall, with faint pigmentation visible around the sides of my nose and cheeks.

Especially when I'm not wearing makeup, my face doesn't look clean and clear; it feels a bit patchy, so I would like to get some treatment. Do I need multiple Pico Toning sessions even for skin like this?

I am also curious if the recommended number of Pico Toning sessions varies significantly depending on how dark the pigmentation is.

Rather than deciding on multiple sessions at once, I would like to try Pico Toning once to see how my skin condition changes before adding more. Is it possible to do it this way?

I would like to know if, realistically, it takes about how many sessions to judge changes in skin tone or light blemishes.