Migrate Raspbian to DietPi

Hello, I’m currently using a Raspbian image that I have customized for a long time and I would like to not start everything from zero. I’m really interested in DietPi and I would like to know if there’s an upgrade path to convert a Raspbian image to a DietPi from command line. Thank you in advance for the answer.

You’ll need to start afresh - well worth it in my view.