How long does the Ondari Lifting effect last for sagging jawlines in people in their 40s?

I am an office worker in my mid-40s. Over the past few years, my jawline has sagged; when viewed from the side, the area under my chin looks rounded and droopy, and the corners of my mouth are also sagging, so I often hear that I look tired. Even though I lost a little weight through exercise, my facial lines haven't changed much.

I have looked into it and heard that the Ondari Lifting procedure uses microwave energy to work on both the fat layer and skin elasticity, so I hear many people consult about it for areas that have gained weight or sagged, such as the chin and cheeks. However, I am asking in advance because the cost plan will likely vary depending on how long the effects last after a single treatment.

① How long are the effects of On-Da Lifting usually said to last?

② If sagging of the jawline and corners of the mouth occur together, is it possible to manage them at the same time?

③ To maintain the effects for a long time, when should I consider the next procedure after receiving the leg lifting?

I am also curious about the opinions of people in a similar age group.