Increase min-max distance before bringing min down

This isn't an issue, but I need to increase the minimum distance between min and max thumbs.

I have an range slider from 0 to 50 million, so, in case the chosen range is too next but higher values (eg. 30M and 32M), the labels are overlapping, instead bringing minimum value to bottom.

Checking SASS, I've found a --thumbs--too-close variable that stores a clamp function, but can't understand how it's working. Maybe this isn't the right place. So, I want to know how can I reduce the min threshold between min-max thumbs.

Thanks!