Siemens EQ7 Plus limescale filter question etc.

Hello coffee friends.
Seid some years I have the Siemens EQ7 Plus reference coffee Crema about 2500 cups, milk and milk mix drinks 0, Esspresso about 200 cups. Water 0.
About every year she is picked up by a service partner of Siemens for service and subsequently brought back
.

In 2020 she got a new brew group.
I always use the Siemens Intenza limescale filter from Brita., hardness level is on B.
Already after 60 cups I should always already replace the limescale filter.Expensive affair.
Filling quantity is about 175ml, beudetet then yes, with 60 cups, only a filter performance of about 10 liters. Really so little???
The filter is not exactly small.
Is it possible to increase it?
I have found nothing in the menu or in the service menu. There is also no information in the manual.
Do you know anything about this?

LG. Mark Wackaman