Looking for formatter for children's books and adult books with kid-friendly illustrations

My books are written by me and illustrated by my six-year-old son. I create children’s books for the inner child and also books for adults but they still include my son’s illustrations. My books are about “Feeling is Healing” and how the emotional traumas we grew up with replay themselves in our everyday lives. I’m looking for a formatter taht can work with both kinds of books. One is more like a children’s book with a discussion guide for grown-ups and the other books are for adults that have a lot more depth but has my son’s illustrations weaved into them from time to time. I have a formatter that I found on fiverr but they take way too long to respond.