@bruin I have promptly journals for all my kids, and it looks like they have an adoption journal. You can see one page of adoption related questions in the preview. I'm not sure if all the prompts would work for your situation, but might be worth looking into? I think you could also use one of their original pregnancy/childhood journals and fill in the pregnancy pages with things you want to record about his birth mother and the pregnancy, and each age section also has the blank "special moments/memories" part that you could use to talk about his birth mother as well?
https://promptlyjournals.com/collec...-journal/products/adoption-history-journals-2
https://promptlyjournals.com/collections/childhood-history-journal
https://promptlyjournals.com/collec...-journal/products/adoption-history-journals-2
https://promptlyjournals.com/collections/childhood-history-journal