I've been dealing with mild insomnia since early January, triggered by Christmas disrupting my routine and some anxiety around sleep. It was quite bad, along with the evening anxiety about it. But it resolved on its own after a couple of weeks without any intervention.
Things went back to normal, completely, but just before a holiday I had a bad night which sent me into a spiral of hyperarousal and bad anxiety for 2–3 weeks. I went to my GP, started online CBT-I in early March, and I've largely recovered. I follow the protocol correctly, stimulus control, routine, the lot.
The specific issue is sleep onset, not maintenance. Once I'm in deep sleep I stay there, but getting there is the problem. Early on I was getting jolted awake by quite big hypnic jerks; that's settled down, but I still seem unable to drop into deep sleep easily. I've also recently stopped 2.5mg melatonin (which I'd been taking for several weeks), thinking it might be propping up "managed" sleep and preventing a full return to autopilot.
Most of the time I don't feel much psychological anxiety, it's more like a physiological state of arousal that persists even when I'm not consciously worried. Occasional bad nights still seem to kick off a run of poor sleep. I had 4–5 great nights in a row recently where I fell asleep within 15 minutes and slept right through, then one bad night knocked me back. This has happened a few times over the past few months now.
I'm starting to accept bad nights more. When I can't sleep I'll read on the sofa, and I'll either drift off there or return to bed. I'm not getting the 4–5 hour nights I had at the start, more like slightly short but manageable sleep. But it still concerns me enough to post here.
Two questions:
1. Is there anything beyond standard CBT-I I could be doing to help my nervous system recalibrate?
2. How long does this kind of residual hyperarousal typically last, and can I expect sleep to eventually become fully automatic again?