Hi Sheikmather,
For Child, no need medical but you need to Enroll in medical commission for RP.

I believe you took the medical for Visit visa only. For RP, you must take separate Medical. Once your RP Approved you have to go back to the medical commission with present visit visa medical paper. And say to them, Converting the Family Visit visa to Family Resident Visa. So that, they will do only x-ray again for your wife and also Enroll your Daughter for medical.

Once Medical Fit SMS came. You can go to Finger Print With papers. (Visit visa copy, Passport for your Wife & Daughter, and Medical papers provide in Medical typing center next to Medical commission waiting hall)

I hope...it will help you... Happy stay in Qatar

By
Saran