Try shortening the amount of time you spend during an actiation session to 20 minutes then mind map - characters, plot theme etc, take a break and do some stretches for 5 minutes have a drink of water and go through it again in another 20 minutes. See if you pull out more. You probably will. If you are aiming to get through the book from beginning to end in the first activation pass... push it... give yourself permission to not pull out "everything" look for what is important to you in the first pass.
For example ask yourself who are the main characters in the book and that is what you look for in your first activation. Next you could ask whats the plot, or whats the theme or where it is set. Remember to ask yourself what you want to find out from the book.
Alex
