We want to change the price of a renewable subscription, but only for newly subscribed users. Old users should keep the old price.
Apple offers a pretty simple option to keep the old subscription price for current subscriptions if you change the price of a renewable subscription. I don't see such an option available in Google Play.
My idea for this is to add a new subscription ID with updated pricing. Users that newly subscribe would use the new subscription ID, while nothing would change for users that are already subscribed. If users cancel the subscription and then subscribe again, they would get the updated pricing, but that's OK.
Is this considered a viable option? How can I make sure new subscriptions only use the new subscription ID? Anything else I am missing?