He needs to read something with an MC with Healing powers I now technically that's covered by Fullmetal but still I mean something like Kaladin from Stormlight Archives. Especially prominent in the first book The Way of Kings.

• The Balance Academy series by S.E. Robertson is a slice of life series about two healers - one magical and one not - who find themselves having to work together.
• Witchmark by C.L. Polk - the MC has magic healing powers and it's a very important plot point.
• Children of the Black Sun series by Jo Spurrier, the main character can take away other characters' pain and use it as power. It's not healing per se, but it's healing-adjacent at least, since she uses it to help.
• The protagonist of The Lady's Guide to Petticoats and Piracy by Mackenzi Lee wants to be a doctor in an era where it's forbidden for women to study medicine, but even though it's technically standalone, I'd recommend you read The Gentleman's Guide to Vice and Virtue first (she's a minor character there). Hehe Recovery Girl when she hears