Reminders subtasks have become difficult to find and navigate.

Previous methods to create subtasks appear not to be working. Have these methods been removed? Has there been a change to the way reminders work?

eg To create subtasks I seem to have to click on the (i) symbol and add subtasks and to view them or check them off, I have to navigate through these steps again. There are new menu changes when I sweep right on a reminder but it seems to have reduced Reminders functionality for no clear benefit. All of my Apple products are up to date.