Dutasteride for Shock Loss Prevention

Hi, I have taken Propecia for the last 6 years, but finished on it about 4 months ago and started on Generic Dutasteride about 1 month ago, I would like to know how long before the Dutesteride will work on shock-loss? Would I recommended to start back on Propecia until the operation has been completed to not get any shock loss? The transplant will be at the frontal region (I have hair there still) and on the temples. I am 29 this year and Norwood 2.5, Thanks

If you were continuously on Propecia (finasteride) and then started immediately on dutasteride when you stopped Propecia, as they are both DHT blockers that work on the same mechanism, I would expect that the protection will be there already. For our readers, I believe you are concerned about developing shock loss in the existing hair after your get a hair transplant. I am curious if you are really a Norwood Class 2, why are you having a hair transplant?