How to set two arc indicator

I created 2 acrs for cycle indicator as img1 ( the left one )
Then I seperated 2 acrs by a space by moving down the green arc. But the whole circle size is not keep. (the middle img)
If I change the angle of green arc by lv_arc_set_angles( green arc, 90, 175). As the right img, the circle size is keep but space is not parallel.

How to keep the circel size and space is parallel?
Best Regard

I would draw a small rectangle between the 2 in the first image, essentially masking both.

Thanks for your idea.