You know, I've been hearing different things from different BAHA patients.
My doc says 3 months for the processor and explained why - basically "torque". It's in another post; search "torque wrench" and you'll find it.
But others have docs who say they can use the processor much earlier. The elderly mother of a woman I work with had her surgery about a week after mine and she's already been told she can wear the processor. I still have almost 2 months to go before my doc gives me mine.