My case:

Background: Postdoc in medical research for 3.5 years; Papers 13, including 3 in preparation; Abstracts and oral Presentations 6; Letters 5, 3 from my school, 1 from China, 1 from another school in another state.

Started preparation: Sep. 13. (I-140/1-485 concurrent filing)
Medical Examination: Sep.19
Mailed case: Sep.29, to TSC
RD: Sep.30 (11:20am)
Notice Date: Oct.5
…… LUD had always been Oct.5
FP notice: Oct. 16, for an appointment on Dec.6
…… LUD had always been Oct.5
Approved: Nov.7,an email notice from USCIS –‘Your case has been approved”, at the same time, LUD became Nov.7

Hang in there.