So, the difference between routine practice, concept practice, and solo practice are:
Routine Practise: it is like a daily practice, of what we do in class, for example, we learned about how range works, so in routine practice, it will ask you to use your understanding about range.
Concept Practise: it is like applying theory and concepts into the practice which helps you understand it better!
Solo Practise: it is individual, and you should not ask anyone for help, and use your understanding to figure out the answer. Also, it could be difficult, so technically it is like a quiz!!
Hope this helps you!!