How to use font by external storage without "lv_font_load"

Description

What LVGL version are you using?

LVGL8.1

What do you want to achieve?

Convert font to c file would use more rom.I want to use the font by external flash.
But use “lv_font_load” need a lot of ram.My chip cant not support enought ram.
My chip support “xip”,can direct to read external flash by address.Have some idea to solve these problem?