How can I improve my spanish as a heritage speaker while my non-native speaking Wife also learns?

Hello, quick context I'm a heritage speaker, my parents are from mexico and I grew up speaking both english and spanish but my spanish rarely got used outside the home. Depending on the context I can come off as fluent or completely stumble over myself. My wife is also wants to learn to communicate with my family, but at most can maybe pick up a few words and figure out the meaning in a basic sentence.

I'd like to improve my spanish to become fluent while also helping and learning alongside my non-speaking wife. What are some good resources we could share or ways of learning we can do together as speakers of different levels? Or would it be better to learn independently of each other?