If the drilling interval of Xiaomi 1 1 becomes larger, you can try to adjust it back according to the following steps:

1. Open the phone settings and select Font Size in Theme, Wallpaper and Font Size.

2. In the font size, you can choose a custom size and then adjust the font size.

3. You can also try to adjust the "Display Size" option, and select a suitable size in "Display Size".

4. If the above methods can't solve the problem, you can try to restart the phone, which may restore the default settings. If the above methods still can't solve the problem, I suggest you contact Xiaomi customer service to get a more accurate and detailed solution.