I'm curious about the standard cycle for Revicol autologous collagen to restore volume.

I went on an extreme diet and lost weight, but along with it, the fat supporting my face disappeared, leaving my cheeks looking sunken. I'm scared that fillers might look unnatural later on, so I'm planning to start Revicol treatments, which are said to naturally plump up by stimulating the body's own collagen production. To effectively maintain the results of Revicol, which plumps up from within without looking artificial, what is the best interval between visits in the beginning? I've heard that the ideal routine is getting three consecutive treatments at one-month intervals. Please share your real-life experiences if you've actually tried Revicol and noticed any significant changes!