How often and consistently should I receive hair loss treatments?

I am starting to notice some symptoms of hair loss, so I am looking into hair loss treatments at a dermatology clinic. However, I have heard that hair loss treatments are not a one-time procedure. Therefore, I am writing to inquire about the duration and frequency of the treatments.

I would like to know what types of treatments are typically available and how long the effects of each treatment usually last. I have heard that scalp condition feels improved immediately after a treatment, but I am curious how long the effects of reduced hair loss or improved hair thickness actually last. I am also concerned that my hair might return to its original state over time.

I would also like to know the recommended treatment cycle. I am curious about the typical interval between treatments initially—for example, every week or every two weeks—and whether the process involves moving on to maintenance after completing a certain number of sessions. I would also like to know how many sessions typically constitute one cycle.

Also, looking at the long term, I would like to know based on actual experience whether this is a procedure that requires continuous treatment for life, or if the effects tend to be maintained even if stopped after a period of intensive treatment. As a working professional, I want to know the long-term plan in advance before making a decision.