Open the special signing software on the computer and write "relax your eyes" on the note;
Set a regular reminder for this post-it note, such as a reminder notice at 3 pm, and receive a message notice when the reminder expires.
After reminding the notification, click the delayed reminder on the notification bar. You can delay the reminder for 30 minutes or 60 minutes and wait for the reminder to expire before receiving the message notification.
Repeat step 3 to remind yourself to relax your eyes every 30 minutes or 60 minutes.