Worried about the recommended number of treatments for deepening melasma.

Hello! I am planning to get melasma treatment these days, and I am asking this question because I am wondering how best to start. I am looking into treatments because the melasma around my cheekbones and on both cheeks seems to be getting darker, but since my skin is quite problematic, I don't know how to choose a treatment method that suits my skin condition.

I am also curious about the typical recommended number of melasma treatments. I want to know if I can expect noticeable changes after just one or two sessions, or if I need to receive treatment consistently. I know skin conditions vary from person to person, but I am curious about the general recommended frequency because I am unsure how often I will be able to get treatment. I am also wondering what kind of daily care is necessary to maintain the effects of the treatment, as I tend to neglect my skin quite a bit. Furthermore, I would like to know what the appropriate interval is between treatments based on the recommended number of sessions. Rather than getting a large number of treatments unconditionally, I would like to manage my skin consistently according to the recommended frequency suited to my skin condition. I would appreciate any experiences or advice from those who have received melasma treatment!