With all delays recently, the best thing you could do is deal with the medical first. If your fiancé is cleared, (not subject for sputum) biometrics can be done any time after she receive her medical results.
Worst case scenario: If applicant is subject for sputum (8-10weeks for the MTB culture results) -- The best course of action is to set her biometrics and interview on or after the 10th week to avoid 221g for pending medical results which could also significantly delay the visa issuance.
I've seen cases from the group chats wherein biometrics was captured in the morning then interview in the afternoon.