Will I feel a change in elasticity after just one Volneumer session?

My skin isn't as elastic as it used to be these days, so I'm looking into Volneumer.
Since this is my first time getting a lifting procedure, I'm not sure how many sessions I need.
I'm wondering if the jawline or sagging cheeks can be slightly smoothed out with just one session.
I've seen some people say they saw changes immediately after the procedure. Is that actually the case?
Or I am wondering if it takes about a few weeks to feel the elasticity improving.
I am especially curious when you first started to feel your skin becoming firmer.
I'm also wondering if it's a good idea to plan for multiple episodes from the start.
Would it be okay to receive one session first to check my satisfaction, and then get additional sessions?
I am curious to know how satisfied those who have actually received the treatment were with their first session.