Has anyone dealt with something like this? What did you do about it?

Lately on the nights that I sleep when I'm laying down I'm fine, but when I'm falling asleep I get this anxiety wash over me that's about sleeping so I completely wake up, try and calm myself down, and repeat the process several times. Some nights I don't try to sleep, some nights I do this too much and give up, and some nights I do eventually sleep.

I don't know if it's a meds thing. I've had no recent changes (I started lithium yesterday but this started before yesterday). I'm on Risperdal, temazepam, cogentin, propranolol (and now lithium). My mood is elevated so maybe that has somethign to do with it.