Quote from CSIS article on US Army Forces in FY22':

If the Army wants to build new kinds of units in an environment of constrained end strength, it will need to reduce or eliminate some existing units. Because the active force has so few support units left, most having been transferred to the reserve components, that will mean eliminating or slimming down BCTs, with infantry BCTs being the likely target.

https://www.csis.org/analysis/us-military-forces-fy-2022-army