Time to report back on my experience on 2 of 3 pieces I learned and finished using the schedule. I keep track of my practice time, but only have one piece from before using the schedule that is similar enough to judge whether the schedule saves time (it didn't). I did notice other benefits and am happy with it.
Oddly enough, I finished the longest piece, a 3-page arrangement of "Watermelon Man" first. I admit that I strayed from the schedule at the very end by learning the last page in one morning and putting the whole thing together because I wanted to play it at a piano club meeting. The last page was just previously learned phrases, rearranged and with one of them an octave higher on the piano. Molly has mentioned in at least one of her videos that she feels more confident performing after using the method. I'm happy report having the same experience. Time learning the piece was 3 hours, 11 minutes.
The second piece, "Great Barrier Reef" was a 2-page Piano Adventures lesson book piece. As far as time saving, it took me 4 hours and 38 minutes, roughly the same amount of time as a similar piece "Ceremony for Peace" (4 hours, 24 minutes) from the same lesson book. The difference that I like is that I feel that I know it at a much deeper level than I did the other piece and my practice sessions felt more focused.
One of my concerns in the schedule was that scary 1-week gap. I was delighted to discover that it turned out to be no big deal. After a single review of the section, it was as if I knew it better after the week off. The same is true after a week off from sections of my remaining piece "Mouse Dance".
So I can't say the schedule is a time saver for me, but I feel more focused when I practice and like I have a deeper understanding of what I've been practicing.