Apple One doesn't allow me to buy more storage
I already have iCloud 2TB of storage, Apple Music & Apple TV, so I decided to use the Apple One Family bundle (only Individual and Family packs are available in my country).
Apple One offers 200GB of iCloud storage though, and doesn't appear to offer any ways to upgrade.
I have checked the support page about current iCloud plan and Apple One ( https://support.apple.com/en-gb/HT211784 ) but it indicates that I will be billed separately each for Apple One and iCloud 2TB.
Is there any way to upgrade the Apple One iCloud storage and keep just one* subscription?
( *which I believe was the point for Apple One in the first place )