Can you customise responsive breakpoints?

I've been having woocommerce layout issues on portrait tablets due to the GP tablet styles set in the customiser kicking in at 769 width rather than 768.
It's similar to this recent thread https://generatepress.com/forums/topic/gp-gb-breakpoints/ and have read the reasoning behind this.

Is there any way to customise the responsive breakpoints if you want to switch from 769 to 768 (or change other breakpoints). I can see a nav breakpoint filter but not a general one?

I'm hopeful I have managed to fix the main tablet issues now by overriding with custom CSS, but it would be much better if I could just have all tablet styles applying from 768 instead. Thanks.