As a random suggestion from someone who did manage to not get his children killed despite ADD... look into bullet journaling as an organizational system for parenting duties. Ignore the endless art-project nonsense on the internet, read the book, and focus on using it for task management and scheduling.

As an adult with ADD, it was a miraculous new perspective on tracking all the things I used to fail to do. I so, so wish I'd had it when I was dealing with small children.