Respect your family's opinions: Although you don't want to offend your family, don't completely compromise your ideas. You can try to listen to their opinions, understand their thoughts, and then express your views in a polite way.
Seek compromise: try to reach a compromise with your family and find a mutually acceptable solution. Maybe you can try to find a wedding glove with a glove length greater than 60cm or less, or try other wedding accessories.
Stay calm: No matter how heated the argument is, it is very important to stay calm. Don't let emotions affect your judgment, and don't say things that hurt each other's feelings in a quarrel.
Finally, I hope you can find a solution that will satisfy yourself and your family.
If it helps you, I hope you can support it. Thank you!