Have you ever heard of bi-phasing sleep?
Studies of sleeping habits show that when people have no external cues about time they revert to a pattern of sleep where they have a deep sleep, then wake for a while, then a lighter second sleep. And there is a theory that this is our natural pattern but it was disrupted by the Industrial Revolution that tried to mould a work force into an 8 hour sleep pattern for convenience, and the advent of the electric light. I just want you to know that being awake in the wee hours isnt wrong or broken. Some cultures have the second sleep as a siesta and are healthier for it,
I’m guessing that you can probably get one full (4 hour) sleep cycle before the night mares during the first part of the night. (Typically a sleep cycle has about 90 mins of non REM sleep of which there are three phases, then a period of REM or dream SLEEP. And then the cycle repeats.)
Most dreams aren’t remembered, except for the last round as we emerge from the deeper sleep.
My recommendation is that you get up when you wake up. Have a cup of something warm (not coffee, maybe a decaf tea like rooibos or camomile) and distract your head for a while with a book, or a nice series (choose carefully ) or a podcast. Or get something useful done like the ironing. Keep the lights fairly low.
You're going to need to create a practice for waking from a nightmare - a way to anchor yourself to reality. Phrases like “I am safe”, “I am ok” “I am here” and deep breathing. Move if you can even if you just start with your fingers, hold a lovie. It wouldn’t be the worst idea to get a dog. Calling the Samaritans or rape crisis might be an option if you need human connection. Keep a little chocolate by your bed because taste is a very strong anchor into the here and now, Right here and now in this second you are safe, and it’s ok.Keep coming back to the safety of the present moment,
The dreams are part of the healing process. I know this sounds bonkers but thank your brain for doing this difficult work for you, it’s figuring out what to do with this experience and a lot of this happens when you’re unconscious.
One of the difficulties of sleep deprivation is that brain has to catch up on the backlog of REM and it dreams more.
The second phase of sleep can be tougher because you are more aware of the dreams and it’s going to take real courage. I have found it helpful to talk to myself in the third person, and say “ok, I trust that you know what we need to do brain, and that you’re taking care of me”. But I know this is easier to write than to do,
I’m so sorry this happened
Please feel free to disregard all of the above if it’s not helpful.
Sending you love and healing.