Your eyes naturally follow motion. Place a pen under the first line and glide it smoothly under each line at a steady pace. Do not stop. This reduces regression and forces forward motion. Start at 300 wpm, then increase.
Visualize the paragraph as a physical object. It usually follows a predictable shape: read grapara
The series is serialized on the Magazine Pocket (Magapoke) app and website by Kodansha . This is the best place to support the original creators. Your eyes naturally follow motion
Here is a guide to where you can read it officially and what to expect from the series. Where to Read Grapara! read grapara