How do I schedule my first acne treatment before an important event?

If I am looking into acne skincare for the first time and have an important event or photoshoot coming up, I am wondering when to schedule the consultation and the actual treatment. I would like to know if it is possible to check my current skin condition first and set the treatment date later, and if it is my first time receiving this treatment, to what extent I can be informed in advance about expected reactions, such as redness or dryness.

During the pre-booking consultation, in addition to the schedule, how much should I disclose regarding when my skin becomes sensitive, the products I usually use, and my previous treatment experience? I am also curious if there are cases where the scope of treatment is reduced or plans are postponed to fit the schedule, and how criteria are established to make decisions without causing any issues.

Especially since this is my first time receiving treatment, I would like to be informed during the consultation whether it is better to take my time and observe the response rather than starting a new method right before an important event, and to know that the approach varies depending on my individual condition. Rather than deciding on a package all at once, I would like to make a decision after the initial consultation, hearing about the next follow-up schedule and precautions to follow at home.