Starting finesteride ? 1 question

[Jaywilliamsss777]

Basically I had a hair transplant a few days ago they have given me finesteride , I have read up about it before the transplant in preparation
And seen my doctor he went through some info with me and checked my blood pressure and stuff ,
Basically he showed me a chart which showed a massive drop in dht levels temporarily with it slowly risen back up to
A normal level , I’m wondering how long this was roughly , I understand I may feel very different at first and I’m
Trying to work out how long for ? Thanks