What Enrollment Actually Does
The Exceptional Family Member Program documents a family member's medical or educational needs so the services can factor those needs into assignment decisions. Enrollment is mandatory when a qualifying need is identified, and it does not by itself limit career progression.
What it does is make sure you are not assigned somewhere that cannot support the care your family already depends on. That only works if the paperwork is current — update enrollment when a diagnosis, therapy, or medication changes, not at the next PCS.