You can now customize the y axis (glucose) range

[Navid200]

The feature is described here: https://navid200.github.io/xDrip/docs/Display/GlucoseRange.html

It has an intended limitation:
If you have readings outside your chosen range, the scale will automatically expand so that those readings will show. The extended range will last 24 hours.

To access this new feature, you need to use an xDrip release of March 6, 2023 or later.
https://github.com/NightscoutFoundation/xDrip/releases/tag/2023.03.06