Does the recommended number of obesity injections vary significantly from person to person?

Recently, managing my weight hasn't been going as well as I'd hoped, so I'm considering consulting about weight loss injections. Although I'm combining diet and exercise, my weight often plateaus after a certain period, so I've started looking into other methods. I'm wondering if the injections involve just a few short sessions, or if they are continued at regular intervals until I reach my target weight.

In particular, I would like to know if the recommended number of obesity injections varies depending on body weight, body fat percentage, and weight loss goals. I am also curious whether a rough recommendation is set during the initial consultation, or if it is adjusted as the course progresses based on changes in weight and physical condition.

I am also wondering if I have to start over from the beginning if I miss the scheduled time due to scheduling conflicts. I would like to know if I stop the weight loss injections immediately after losing a certain amount of weight, or if there is a separate maintenance period to prevent the yo-yo effect. I would like to receive a consultation on how to generally set up a plan when starting for the first time.