It looks like you were a non-responder to finasteride, which is unfortunate. A lot of guys for whom finasteride did not stop their hair loss have managed to have success with using dutasteride. There are several success stories on these forums of this happening. There's no way to know how well dutasteride will work for you until you use it. Hopefully it will put a halt to your hair loss, but this is not a guarantee. If you find that dutasteride is not strong enough to stop your hair loss, you could try adding a low dose of oral minoxidil. Your T levels will rise slightly when switching from finasteride to dutasteride. But this should not be of any concern, as it is DHT and not T that is the main culprit in hair loss.