bjamin,

Pushing yourself hard at work may be your trouble. If the push is triggering adrenaline like it often does, your system may be slow at restoring to normal levels.

The common med for PCS insomnia is amitriptyline or nortriptyline in small doses a few hours before bed. They are tricyclic anti-depressants.

Trazadone is also an anti-depressant (tetra-cyclic) or SARI Seratonin Antagonist and Re-uptake Inhibitor.

Maybe a change to something different would be worthwhile.

Sleep hygiene or the behaviors you follow the few hours before bed can impact your sleep.