The problem with this is that you don't know what his CS/Render count and Story Outline will be like in the future. If you're guesstimating the percentage based on what you have seen so far, I would say we are a lot further along than 30-35%. He's trying to tell a story in 30 P.D. that will take much longer to tell a true story like what he is trying to write realistically. Since his story is supposed to be "Realistic," and since we won't have Time-lapses, per the L&P statement, He's going to have significant plotholes forming; there is no doubt in my mind about this to advance the story to keep it in 30 P.D. Say what you will about Sophia/Dylan's story, but that was a major jump going from a perverted teen for 12 P.D. to defending Sophia, and his attitude and demeanor matured in this last P.D. IMO, this was a gap that formed and other gaps will soon follow.
Another thing is unless you know the outline or story for the following 18 P.D. remaining, Playable Day 13 C.S./Renders could be lower than the current P.D. By looking at the outline for P.D. 13, it seems like he only has one major event planned, and that's the evening. In contrast, this current P.D. ended up with two significant events, in which Sophia/Aiden's story was converted to a major event.
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Morning will most likey be short. I haven't seen him do 2 major events back to back with the same set of characters. Coach Sophia is DLC now. Afternoon, maybe short because of the same reasons I gave about back to back major events. I see one major event here and it takes place in the evening. This upcoming P.D. could be shorter than the current P.D. as far as CS/Render count could go.