Disabling the css output

Hii there i am creating a theme and i have included the kirki plugin in my theme successfully. Everything works just fine and its the best plugin by far. I am stuck at a particular place though i would like to somehow disable the output kirki sends to the header of the theme and do it myself (i am planning on using fwrite modules with some custom caching and include the file) without disturbing the behaviour while in customizer. I have tried reading the code for a while and i just am not getting any brainwaves at the moment ( a lot of classes and crossfile reference always makes me go bareseek sorry!). I am just stuck so any help would be appreciated….

https://ww.wp.xz.cn/plugins/kirki/