30 seconds per page is OK try to get it down to 10 seconds per page.
To help you to stay in superreading mode and not fall into rapid reading set a timer for your 30 minute activation pass. Aim to go through the whole book in that time (or 200 -300 pages) Repeat with 30 minute passes till the book gels for you.
For novels it's OK to go straight to a rapid read if you want to read the book for personal enjoyment. Remember that rapid read is flexible - from superfast for the boring bits and slower for the parts you want to realy enjoy 
Alex
