I found this on a reddit post via Google. I don't want to send anyone to that site so to save time here's the post. Hopefully this can work for you. The post is 1 year old, and I haven't checked these links still work. Good luck!
This is just how I, a person with ADHD, keep track of my events. This shortcut just sets alarms for 30 minutes before each calendar event to remind you about it. I have it automated to run every morning. Only downside is you end up with a whole lot of alarms.
https://www.icloud.com/shortcuts/c997e06e177e42dda12d298a8ad39434
For those who prefer reminders over alarms, here’s one for reminders: https://www.icloud.com/shortcuts/12711e7e1556457f927f4f91969527fc