Do not take finesteride at your young age unless you have been directed by a doctor.
Hormonal balance is not something you should be disrupting or messing with.
There are real long term implications.
After on and off finesteride for 10 years I decided to go with only minoxidil 15% and derma rolling.
Finesteride is powerful and gets results but there are other options.
I say go off the finesteride and try other methods, all discussed on this forum.
good luck