we all know the earlier you take Propecia the better but can define the work “early” would it be starting Propecia 1 year into the MPB process or more?
There’s no true timeframe for what is “early”, but the earlier you decide to take charge of your hair loss and take Propecia, the better your chances for success. If you’ve let your hair loss progress for a decade, obviously that isn’t considered early hair loss. A year or so is still pretty early.
See your doctor, get a good diagnosis, establish what you have, and find a treatment goal and plan.