How often do I need to receive Shurink treatments to maintain the results?

I am thinking of trying Shrink once, and if it works well, I plan to continue the treatment regularly.
However, I looked it up and found that the treatment cycle varies greatly from person to person.
Some people say they receive it every few months, while others say it is once a year.
My skin is not severely sagging; it is just a slight loss of elasticity.
So, receiving it too often actually feels burdensome.
I am also curious about how long the effects usually last after the first treatment.
I would also like to know if it is better to receive it again after the effect has completely worn off.
Or are there many people who receive it for maintenance purposes when the effects start to wear off?
For those who have received it multiple times, how often do you usually get it?
Please let me know if there is an appropriate frequency for the first recipient.