Originally Posted by pcjazzdrums
So, essentially I spend 70% of my practice time (1-4 hours per day) on books and the other 30% on things like creative soloing, playing along with tunes, etc.
I would say that I do the opposite. I spend 70% on things not related to a book, and 30% related to a book.
I think of books as not as important as performing or soloing. Books can help you improvise, but the best practice would be to just completely improvise on your own. To me, exercises in books are like going to practices for a sport. There important, but there not actually playing the sport.
So, both practicing with and without books are important, but I would practice more without a book.