W2 Corretion Request due to HSA Excess Contribution

This year, I turned 65, and starting in February, both my wife and I enrolled in Medicare Parts A and B. In the previous year, I was covered under my employer’s health insurance and contributed $9,300 to my HSA. I had initially believed that my wife’s Medicare coverage, which had a delayed enrollment, would begin on February 1. However, it was retroactively applied six months back, which meant we were only eligible to contribute around $6,300 to the HSA—not the full $9,300.

Upon realizing this, I requested a $3,000 excess contribution refund from our HSA provider in March and received the refund on April 12.

However, after filing my taxes in early April using TurboTax, I printed out a copy this week and noticed that my HSA contributions are listed as $0. It seems I may need to file an amended return.

Question 1:
Since the original W-2 issued by my employer shows $9,300 in Box 12, code W, do I need to ask my employer to issue a corrected W-2 (Form W-2c) reflecting the updated contribution amount?