I've been on seroquel for sleep (50 mg in the evening, and a few weeks 50 mg in the evening and 50 mg when I would wake up at night) and for depression/PTSD (200 or 300 mg XR). It worked for sleep, but it didn't do much if anything for the depression and PTSD.

I don't have any experience with Latuda.

I hope this works for you.