Absolutely! Want to switch from a weekly plan to a monthly or yearly plan (or vice versa)? Here's how to do it on your iPhone or iPad:
Since your subscription is managed by Apple:
Open the Settings app on your device.
Tap on your name at the top.
Find "2nd Phone Number" in the "Active" Subscriptions list and tap on it.
Tap on "2nd Phone Number" subscriptions.
Choose "See All Plans".
Browse the available options and select your new preferred plan.
Follow the on-screen instructions to complete your purchase.
Keep in mind:
If you have days remaining on your current plan, switching won't be immediate. Your new plan will kick in automatically after those days expire.
The exact steps might vary slightly depending on your iOS version and device.
You can always visit the official Apple website for more information on managing App Store subscriptions.