I was looking for the funding for Program Expansion in the NDAA and I see the Army received 1/3 of the request. They determined they only "needed" the designated funding. Could be that there is a benign reason for this as the OTA from 2017 in the link suggests. That the Program is moving much faster than we know. General Gervais says as much in the Video below,

NIGHT VISION DEVICES 236,604 (request)
81 ,526 (Bill)
IVAS early to need -76,225
ENVG-8 program of record unit cost growth -17,509 Program increase - digital night vision test devices 3,000
ENVG-B ONS excess to need -64,344


The Government intends to award one (1) OTA, procuring approximately two thousand five hundred & fifty (2,550) IVAS prototypes (to include hardware, software, and the associated interface control documentation) in four (4) increments or "capability sets".


This competitively awarded prototype project will provide for the acquisition of follow-on production systems upon successful completion of the project, without further competition, as authorized by statute. The Government anticipates the selection of one (1) Offeror for award of a single contract or agreement for follow-on production of IVAS.

http://www.rfpdb.com/view/document/name/Integrated-Visual-Augmentation-System-%28IVAS%29_W91CRB_18_Z_0001