The melasma is particularly noticeable when I'm barefaced. Should I sign up for a treatment package?

Lately, even when I try to go out in the morning with just sunscreen, I am so stressed because of the patchy pigmentation on my cheekbones. There is a limit to how much I can cover it up with makeup, so I am looking for reviews on whether I should start melasma treatment.

I asked around, and people told me that melasma treatment definitely won't work after just one or two sessions, and that I need to get toning treatments consistently for several months to see results. I'm suddenly scared that I might just be wasting my money on an expensive package that only makes my skin more sensitive with minimal treatment results. ㅠㅠ At which session do you usually notice the pigmentation fading, and are there any great tips for skincare that would be good to combine with toning? Thank you in advance for your answers.