You are lucky your security checked IRCC internal & finished very soon. If forward comprehensive A34 then involve CBSA & CICS then wait one year more. My started A34 March 2026.
IRCC does not always request a new medical exam for every family member at the same time. They may reuse a previous medical, waive it, or request it later depending on the person and application.
IRCC may require biometrics from everyone who is eligible/required.