What is the standard recommended number of lifting procedures?

I am seriously considering purchasing a package to get rid of the fine lines spreading across my face and the loss of elasticity in my sagging cheeks. When I looked up posts on online forums before visiting a clinic, I saw that doctors usually recommend receiving lifting treatments at least three times consecutively at regular intervals to properly see the effects of cell death or barrier regeneration. I am wondering if diligently receiving regular treatments for the recommended number of sessions will really smooth out my dull areas and make them firm and supple. While individual results vary greatly depending on skin type and the rate of aging, I am curious about the level of line improvement seen on average for those who have completed the lifting procedures according to the guidelines. I am posting this question regarding lifting procedures because I want to know if dramatic transformations like those in before-and-after photos actually exist. Is it absolutely necessary to complete the designated number of lifting sessions to see results?