Struggling with the Oyo vs. Lagos dialect nuances while watching films

I'm currently trying to move from watching Yoruba movies with subtitles to raw audio, but I'm encountering a major roadblock with regional variants. I feel like the actors from Oyo often use different verb structures and vowel sounds than the Lagos urban speakers I hear on the radio. Is there a specific resource or strategy that maps out the core differences so I can stop feeling lost during these shifts?