Hi Steve, Welcome.

There's really no "normal" where this is concerned; each patient and procedure is unique, both in the condition requiring the surgery and in response to the procedure, healing time, and response to medications.

Whether you're given/taking Neurontin/gabapentin, Lyrica/pregabalin, or Topamax/topiramate, the duration will likely be very close, whether a few weeks to indefinitely, depending on how well the surgery went and how you heal. There are side effects associated with all of these meds; it wouldn't hurt to look them all up and become acquainted with them and the side effects so as to know what to expect or look for.

Taking it easy and allowing yourself to heal are of primary importance now, so that you can get off of all these meds. I don't know where 9 weeks fits into the scheme for your particular case; that would better be left to the experience of the surgeon, or a physiatrist (a specialist worthy of considering seeing, IMO, if you or the surgeon think rehab from the surgery is not progressing as it should).

I think it's a good sign that you've been able to reduce the percocet as much as you have. This suggests that you may be able to reduce and eliminate the Lyrica (or whatever) as well. Many pain patients are prescribed a low dose (10 mg) of amitriptyline for nighttime (I've taken this on & off myself) in lieu of either opioids or antisiezure meds. A possible added benefit is that it may play a role in helping the nerves to heal/regenerate.
http://psychcentral.com/news/2009/06...tors/6761.html

Doc