Well, it does help to formulate a specific question to post on the forum, even if it is only to focus my mind on finding my own solution!
Today, I started over with Day 1 Lessons, because I want to see what Justin has learned, after 2 weeks of alternating between Day 1, Day 2, and Day 3 lessons.
We did the Word Flash, as usual, and I reminded him that it is really fast, so he has to say the words fast.
Then, for the Multisensory lesson, I turned the sound all the way down so there was no audio, and waited for him to say the word on the screen, after which I clicked to the picture and then to the video clip.
He read every word in every catagory (except one)!!!

And no resistance whatsoever! YEAH!
The only word he didn't read correctly was "chin" (he said "chicken")

I turned the sound back up for the Picture Flash lesson.
Then, we went right on with Session 2, again turning the sound all the way down for the Multisensory lesson.
Once again, he read every word except one!
Only this time, after misreading "chin" as "hair" (because of the h?), when I put the mouse cursor under the ch and said the sound /ch/, he then said "chin."
No need to do the printed out flashcards, today!
Justin's Mom