I am B2. How to progress further?

Hello everyone! I have recently written a B2 German exam (I am yet to receive the results, but I think I’ll pass).

I have been reviewing Anki, watching content, attending language courses etc.

In September I’ll start my C1 course, but until then I want to improve my German as much as possible for my journey to be easier during the course (I’ll have an exam in September)

The thing is: something in the process is bound to change, right? E.g. using definitions instead of translations in Anki.

What would you recommend me to do?