Start with high-confidence health & daily life books, then narrow by subgenre or adjacent topics.
I'm Growing!
Aliki
Hear Your Heart
Paul Showers
Smile: a Graphic Novel
Raina Telgemeier
Little Explorers: My Amazing Body
Ruth Martin
Ultimate Kids' Guide to Being Super Healthy
Nina L. Shapiro
Teeth Are Not for Biting Board Book
Elizabeth Verdick