My English for your Spanish

I'm an English teacher and want to take this opportunity to improve my Spanish now that I'm quarantined. My level is about B1-B2. I propose the following:

We speak in English for 5 minutes, then in Spanish

When one person speaks in the other language they should take notes of the mistakes made. When the 5 minutes are over, we should correct the mistakes.

I'm going to be very strict about the time limit as I don't think it would be worthwhile otherwise (no merece la pena si no lo hacemos así)

Thanks and talk soon! (Obviously this will be on skype/google hangouts)