There are a number of stimulation techniques to help nerves heal, but this may be too soon after surgery to employ them. Many are things the PT can teach you to do at home, as they need to be done a couple times a day to be effective. These are quite simple, and effective at easing or stopping some of the symptoms. The stimulation is also reported to help the healing of the nerves go a little faster - but faster is relative - the neurons need to be rebuilt and reconnected, and have their own timetable.

Maybe you can ask the surgeon for a PT referral, once he confirms everything is healing properly.