Over the long term experience for me, head aches/pains will change/shift location. Nothing predictable of the cause(s) or the timing, in my own experience.

While the fatigue , the brain fog, and the cognitive dysfunctions remained pretty much 'consistent' for me.

As concussedlawyer has said it: "PCS is a marathon not a sprint."
Settle yourself in for the long haul and be patient with yourself and your symptoms.

As Mark has reiterated again & again here, "If you've seen one head injury, you've seen one head injury."
Try not to compare yourself and your symptoms too much to others' --- there is wide degree of variance.
It seems that this can be expected.

Good luck to you, Chris, and I do hope for you a speedy and full recovery.

Sincerely,
Theta