How is the Pico Toning cycle usually determined?

I am looking into Pico Toning because of blemishes and a dull skin tone. I am wondering if the laser treatment is a one-time session or if it needs to be repeated at regular intervals. I read online that the recommended number of sessions and intervals vary depending on skin condition, so I would like to know how the treatment is actually planned. I am curious if the Pico Toning cycle is fixed or if it varies based on pigmentation levels or skin reactions. I also want to know if the initial approach involves treatment at regular intervals followed by maintenance. Since my skin is sensitive, I want to avoid repeating treatments at very short intervals and proceed slowly while monitoring my skin condition. I am also wondering if I need to discuss any previous laser treatments in addition to my current skin concerns when consulting about the cycle. For those currently undergoing treatment, please share how many sessions it took to notice changes in skin tone and what factors you considered when scheduling your next appointment. I would appreciate honest experiences from those who have just started this.