Good afternoon @jake-bouley; spoke to my husband who is a 92A and has been to a JRTC rotation before their deployment. This was his input, hope this helps or at least provide some guidance
Okay. So looking at JRTC /NTC rotations you will most likely need about 30 days of unit supplies to sustain your day to day operations in while you are training. Things we took were:

Chemlights
Multiple copies of H/R (UDL) of equipment that you took over there for inspection
Batteries for the thermals and NVD
Commo stuff (BFT or a TOC worth of supplies)
OE254 (Antennas to communicate)
Face paint (a lot)
Trash bags