It's longer for a lot of trans-related surgeries because they want to minimize complications during the healing process & encourage small scars (this is true for a lot of bigger surgeries that are done with a cosmetic emphasis, aka caring about how the scarring looks), and weed interferes with wound healing
Def check with the doctor on whether CBD/THC interacts with whatever pain meds you're given - what you get and what you take varies a lot (I only took OTC tylenol/ibuprofen afterwards). Also, smoking may be especially difficult, because it’s chest surgery & potential coughing/irritation from smoking might be worse with the bandages & preexisting swelling/irritation in the area. Edibles might be safer to start with to avoid that specific potential issue