Should I stop taking finasteride/ Propecia 2 weeks before surgery?

I am going ahead with my 2nd hair transplant. Since my first procedure, I've been recommended to take finasteride/ Propecia - that was 2 years ago. The surgeon now have asked me to stop taking any form of finasteride 2 weeks before the surgery and should only resume taking the drug two weeks after the surgery. His justification is that finasteride have chemical that is bad for the newly planted hair. Is this true?