Calibrate and proof colors

I need the calibrated proof print for the wedding album set due Friday. Open the TIFFs from the shoot, convert them to the studio print profile so skin tones match our contract, place the control patch TIFF at the bottom right, and export a flattened 300 ppi PDF for the printer. Check one image under the D50 preview and confirm the cyan in bridesmaid dresses is within our previous approved delta before sending.

Before I send proofs to the client, make it obvious whether colors shifted in conversion. Create a two-up view with the original camera RGB on the left and the studio print profile conversion on the right, highlight the five skin-tone sample points we use, and call out any color shifts greater than our 3 ΔE tolerance. Add a top-line sentence that the art director can scan: Pass or Needs Correction.

We ran the conversion to the studio print profile and now the lead’s dress reads noticeably more cyan than the client-signed shot. The art director is out until Monday and the print deadline is Friday. I am worried raising this will force a costly reprint. I cannot tell whether the shift is from the profile choice, a bad white balance in camera, or my soft proof settings. What is the most likely cause and the three-step fix that keeps us on schedule?

Across multiple jobs we keep shipping proofs that pass soft proofing but shift toward cyan/green at the printer. That cost us two reprints last quarter and eroded client trust. I suspect inconsistent monitor calibration and an informal proof checklist. What two habits should I change immediately and what one simple checklist item would prevent most reprints?