Did you get an assessment by a hair specialist?
Shedding doesn't mean you've got less hair, only a precise photo can tell you.
DHT attacks the hair folicle over time, has nothing to do with tissue DHT.
Each time, the hair folicle gets smaller, sheds faster (so hair cannot grow long),
until its just vellus hair.
What is long term, is the efficiency of the enzymes that convert T -> DHT,
those if affected by dutasteride are effectively suppressed for quite a while
even after you stop. Finesteride has also a suppressing effect, but not as long.
If you're highly susceptible to DHT, you need to continue a DHT suppressor
FOREVER. The Surrenals produce some T derivative that can turn into DHT
and bind and damage the folicle (that's how some women lose their hair
in a male pattern baldness pattern).