Need help moving from scripted dialogue to natural, informal Hindi with parents

I’m a heritage learner who can understand most of what my grandmother says, but my own output is super stiff because I learned 'textbook Hindi'. I want to start injecting colloquialisms and natural speech patterns without sounding like I’m reciting a lesson. Would using a tool like Chickytutor.com to simulate casual conversations help me loosen up, or is there a better way to bridge that gap?