Update subscription duration

Hi there - I would like to update the subscription duration in our app. Is there a way I can update it from one month to one year?

From View and edit in-app purchase information:

All in-app purchase metadata can be edited, except the product ID and in-app purchase type. If your in-app purchase was never submitted to Apple for review, you can make changes to its metadata. If your in-app purchase was already submitted, some changes require approval by App Review.

Update subscription duration
 
 
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