How often should I typically take collagen boosters?

I am in my 30s and planning to get collagen injections at a dermatology clinic because I am concerned about my declining skin elasticity. During a brief consultation, I was told that the effects are maximized by proceeding at regular intervals while monitoring skin replenishment, rather than receiving just a single treatment. Therefore, I am posting this because I am unsure how to determine a specific cycle for these collagen boosters.

I read online reviews stating that people typically receive three consecutive treatments at one-month intervals, and then extend the collagen booster cycle for maintenance purposes. Since everyone's skin regeneration speed is different, I am concerned that starting with a very short cycle might increase the risk of side effects, such as nodules. I would really like to hear advice from those with experience on what treatment cycles people generally follow to maintain the longest and most stable effects.