Congrats on the newest addition to your family!

I felt really compelled to comment because I also had some really bad nightmares due to some traumatic experiences when I was around the age of your DS (IIRC he is around 8 or 9?). As silly as it sounds, having a dream catcher near my bed helped me a lot. I had a ritual of “knocking out” all the nightmares it caught every morning. Definitely not saying it is in any way a substitute for therapy and he might be on a different emotional/developmental level than I was at that time, but it helped me a lot at that age. Feeling like I had some control helped with the nightmares and I wanted to suggest it in case DS might be helped in some way too.

Glad to hear that everyone is moving on and hope things continue positively. All the kids (both yours and the niblings) are so lucky to have you!