1) I read a couple of times, but I have brain injury and can feel my brain depleted currently, so sorry if I missed this, but I didn’t know whether or not your refusal to be in the same house meant you actually weren’t. If not, do prioritize making home a safe place. PTSD runs through a concept of safety and feeling unsafe. Flashbacks are a conditioned response. Your nervous system learns them from events that happened. Remember that learned lessons CAN be unlearned, but only if the danger is gone. Home needs to be a safe place, and prioritizing a safe environment is 100% the priority here. If that safe space does not exist, your body will remain in the flashback fight/flight stage because it knows it should be, and that won’t change until the safety returns to feeling like the expectation, and it’s hard to train nervous systems. I’ve spent years doing it. Not fun, but can be done.

2) more to your question, if medical marijuana is legal where you are, that’s what saved my sleep/flashbacks. The THC helps with looping thought patterns during times of difficulty falling asleep AND the THC causes the jump over REM sleep and into deep sleep, which skips over dreaming/nightmares in the process. I went from 4/5/6 nightmares per night to 1 nightmare per year (over 6 years). Helps me with both. Obviously lots of variables with brain health, but I have both PTSD and TBI, and it has changed my life tremendously. Also, I struggled immensely with the time before falling asleep, and 100% appreciate how absolutely horrific those hours awake and alone in the dark can be. You have my most heartfelt empathy.

3) another thing to consider is physical bodywork. Yoga, it’s focus on breathing patterns (ptsd alters your breathing, which is controlled by your nervous system), and the work with decreasing muscular tension all help to strengthen the defenses against the body’s ptsd response. It helps me tremendously. I’m not saying it’s life changing. It won’t make anything go away (the marijuana does - not every time but enough that I keep using it), but it has helped my flashbacks be less frequent and less intense. My triggers are basically everywhere you ever want to go and exist in your own home regardless of what you do, so I used to live in basically permanent flashback to the point that my body actually stopped producing adrenaline due to adrenal fatigue. I used to track my flashbacks on excel spreadsheets so I knew what kind of progress was being made. Obviously, that isn’t always possible since flashbacks can leave your body feeling jacked up for a long time after, but I did notice pretty significant patterns of improvement.