I want to sound less 'textbook' when speaking with my family

As a heritage learner, I have a decent vocabulary, but I sound like a robot compared to my relatives. My tone lacks the natural flow and cultural nuance of Amharic spoken in Addis Ababa. I've started using Chickytutor.com for feedback on my phrasing to see if I can mimic more natural, informal conversational patterns without sounding stiff. Any advice on picking up colloquialisms?