I feel awful Strattera when I’m tired (not because of it)

I’ve been on Stattera for a few months now, and I’m happy with how it’s going and I think it’s working. Side effects have all but disappeared.

There’s a problem that I have found though, is when I’m tired (shift work) I feel absolutely awful, like headaches, eyes hurt and I feel mentally exhausted. The medication itself doesn’t cause it, but when I lack sleep for other reasons I feel like crap. Does anyone have any advice how I could maybe counteract any of this crap feeling. I’ve never been good at getting back to sleep once I’m awake, the obvious answer would be more sleep but that won’t be happening until I go to bed as normal.