Hi, welcome
I'm no expert on PTSD. I presume however that I more than likely had the illness back in the days my children were young. Reason being my work history of prison guard, a few relationship breakups, my brother suiciding security and trauma along with dysthymia. I was one nervous Nellie.
Raising my children meant lack of patience, intolerance etc. When they were 7 and 4yo I separated from their mother so had them every second weekend. That actually helped in terms that I missed them so much I revelled in their presence and the PTSD symptoms didnt come to its peak. By the end of those weekends I'd be spent however.
So ,y point is- distancing yourself can help but how would you do that when you have them in your care 24/7?
Respite- a friend, partner or relative that can take care of them a few hours twice a week can help. Chill and go window shopping, cafe for a drink, sit and soak up the sun.
Activities- a child thats busy doing stuff is a delight. Set up a table at the other end of the house and flood them with paper for drawings, lego, plasticine, etc. When they come crying to your room where you are resting take them back to that room and stay with them until they settle.
Sleep- cut out arvo sleeps and put them to bed earlier. A few hours extra evening calm for you. If you suspect you dont sleep well (partner might notice intermittent breathing) then a sleep study is in order. Sleep apnoea will result in a CPAP and that will give you better sleep in turn your mood will improve.
Structure- when I first separated from my ex I set up routine. No eating in front of the TV always on the dining room table as we could exchange conversation.
Crying- A doctor told me once "I've never seen a child die from crying". What great advice. I would then allow that crying to continue without so much drama in my head.
I dont know if that can help. What do you think?
TonyWK
