Mi Robot - Main Brush Disassembly to Clean Axle

Hello!

I've searched everywhere but can't find how to disassemble the main brush into smaller parts.

While it's easy to clean the main orange area, the tips of the axle (gray part) have tangled hairs which spun tightly around it, especially at the small area between the end of the orange rubber and the start of the gray disk.

I've tried cutting the hairs, but the angle is not very helpful. If I could remove the disks so that I can pull the hair through the axle, it'd be great. However, I can't find how to disassemble it without breaking it.

Any help?