Well it was coming up to my 2:30am nap and then I don't remember what happened. All I know was nearly an hour later I was sitting up at my computer. Did I fall asleep? Perhaps lightly, but I was still sitting in my chair, so it's also likely that I was just in a zombie like state staring at the ground.
After I snapped out of that I could have kept going but knowing that come morning my parents would say "You are tired go to sleep". They obviously don't know how it works and I can picture them saying something a few days later like, "See, 9 hours of sleep a day and you are totally better." They didn't actually say that though, so I won't make accusations just assuming what I think they would do based on what I've seen. That would really annoy me though.
Anyway, here are the results of my sleep on a poorly drawn table in paint.
That actually looks like a poor performance, but I'll explain some of the stuff. Day 1 we can just ignore, because I wasn't actually polyphasically sleeping there. Day 2 was good because The first nap was skipped because I was no where near tired enough(I later decided it is better to just lie there than completely skip).
Day 3 was the first day that I actually stuffed up. That was the day I slept from nap 2 through to nap 3. I had to skip nap 5 3 times in a row because at that time I was unable to nap, but that was okay, having overslept twice there wasn't really much lost from that.
It starts on day 2, I oversleep day 3. It picks up on day 4 and I oversleep day 5. It then picks back up on day 6... Do I oversleep on day 7? Maybe.. Maybe not. Day 6 went a lot better than day 4, and day 4 went a lot better than day 2, so chances are that I wouldn't have overslept. Even if I did, I'd make it through day 9. From my experience here, 6 hours oversleep = 2 days pushed back on the adaption.
There were also 2 things here that was changing. At the start I was bad at napping. At the end I was getting much better at napping, so that would definitely have had a significant effect on the increase in adaption, even though I overslept. It really can be a complicated thing and varies from person to person.
I think I was pretty close and I know that a lot of 15 year olds wouldn't be able to pull that off. I'll DEFINITELY try again as soon as I move out of home. I won't base my schedule around monophasic sleep then convert to polyphasic, instead I'll base my schedule around polyphasic and say "I can't do that, I have to nap then". Rather than "I can't nap then, I have to do that". It may take serious dedication and a lot of effort, but I think it is worth it.