I would just call Fidelity and tell them that all of your 2024 contributions are an excess contribution and ask them to return it to you. If they need to sell your investments in order to do so they'll probably tell you that and do it for you.
Also, you have until 10/15/2025 to get it done; it doesn't need to be by 12/31/2024. But doing it sooner is probably easier and better.
Fidelity will send you a 1099-SA in the spring after your distribution for you to report on your 8889.
I would not leave the HSA open. I would close it. Fidelity can always open another one for you later when/if you do qualify.
If you made the contributions via your employer (doesn't sound like it), the the HSA contributions will be reflected on your W-2, and if you enter or import your W-2 into your tax program it should take care of putting the HSA contributions on Form 8889. Don't double enter them.
For future years, you may consider dropping your health insurance coverage and going on your husband's coverage. Typically this would enable the two of you to contribute the family maximum in any proportion to both of your HSAs (with a minor exception regarding catch up contributions).