I was taking Finasteride for two years after GCS, thinking that it would stop any further hair loss. This is true if you have blood levels of Testosterone and Dihydrotestosterone that are in the male range.
A few months ago, I had my T and DHT blood levels measured. The T is in the middle of the female range and the DHT is so low, it cannot be measured, only trace amounts. I stopped taking Finasteride because there is no need to use it.
If you are considering stopping Finasteride, get your blood levels measured. This is the only way to truly see what is going on.