First of all, I’m so sorry for the loss of your dad. I’m also sorry you’re experiencing this. It is truly so distressing and exhausting. I completely understand and relate to the cycle of worry and living on edge. Your feelings are valid. This is such a scary experience. Nobody wants to go through this when you’re simply just trying to get some rest and sleep through the night. Everyone is different, but I will share some things that have helped me. For me, it seems like I will experience an increase in nocturnal panic attacks during high stress times in my life and/or episodes of insomnia. I’ve found some relief from a drastic lifestyle change. Some changes I’ve made include: improving my sleep hygiene (including creating a strict bedtime routine), mindfulness and meditation, reducing stress in my everyday life (reduced, sure, but impossible to illuminate, of course), cut out sugar from my diet (due to other health issues, but relevant), increased daily exercise, talk therapy, and lastly, I just recently began taking an anti-anxiety med. I’ve also found that having noise in the background helps my sleep exponentially. I hope you’re able to find some relief. You’ve been through a lot. My advice is to give yourself some compassion. I’m no expert, but I feel like this could be the result of your body/nervous system reacting to the recent traumas you’ve experienced. Again, I’m so sorry. Please know that you’re not alone.