I've seen similar posts on stack overflow, but haven't seen any specific to large navigation bars that change size as the user scrolls down.
What I would like to achieve is a left-aligned title and subtitle in my navigation bar that either hides or decreases in size the subtitle when converted to a regular navigation bar.
Other answers in SO such as this one: (https://mcmap.net/q/342006/-add-subtitle-under-the-title-in-navigation-bar-controller-in-xcode), create custom views, but they are commonly unresponsive to movements in the bar.
Any ideas on how to properly achieve this?