I was recently reading old posts on the forums in my spare time, and one I came across by Pete Bissonette stated that the more he photoread, the more spontaneous activation that occurred.
30 books? I maybe did that in my first week or two of photoreading, yet I didn't spontaneously activate anything. Actually the dictionary game was the first time I actually had spontaneous activation, and that's what sold me. It was too exact, there's no way it could've been a coincidence.
Anyway, my point is, 30 books is nothing to a photoreader. Photoreading 30 books maybe in a week or so, for a few weeks, and you'll start to NOTICE your spontaneous activation. See the thing is, you're always spontaneously activating through the image stream, but those ideas go unnoticed. Photoreading and activating more builds that connection which helps you notice those images and ideas, leading to spontaneous activation.
Keep going for it, you will achieve what you want.