Bren,
Just read your thread. I am currently 8 weeks post op and have had an remarkable recovery. I had middle fosa and since about the first week, I have not needed (or been able to for that matter) nap in the afternoon. I have not, however, ever been a good napper so genetics may play a part in this. My surgery was only 4 hours so I am also thinking that I didn't experience the brain fatigue because of the duration of surgery. That being said, I would find myself very tired around 7 pm. It looks like your hours are late afternoon/evening so this may be an issue with you. Any possibility you can take an earlier shift in the beginning days? I think if I had a low key, desk job, I could have gone back easily about week 5. I do not, however, as I am a teacher, so I have a little more time. The main issue for me right now is building up stamina so I can be on my feet all day and getting used to noisy environments as I did end up SSD and middle school is very noisy. It does not look like you have a low key job, either, so I am betting you are going to need more time too. I would get the dr to give you 6-8 weeks and then you can see how you feel and go back earlier if you are up for it. Any chance you can go back initially part-time? That seems the best re-entry for most people. I do not have that option so the dr. wrote a note for me for longer since it will be 100% once I return.
Hoping your surgery goes without a hitch and you are back on your feet before you know it!
Cheryl