Limit autocomplete to begin backend API query call after 3rd character typed

Hello, I've created a text field and in the backend query section added an API that returns a list from a search result. I've turned on the autocomplete, but noticed a few oddities -

1. The autocomplete list doesn't appear to the user unless I click out of the text box

2. There doesn't seem to be a way to limit waiting to populate the autocomplete until the user has entered a set amount of characters

Any help/guidance would be appreciated, thank you!