I have been TERRIBLE at writing down his sleep patterns (and I have been really keen to see what these are) so will make a big effort for the rest of the week to track these in my (neglected) app.
But while its fresh in my mind here was today (and yesterday was very similar):
6 am WU for day - feed between 6-6.30 am
7.45 am S (I had to wake him after an hour to take my older child to preschool

)
10 am E
10.30 am S
12.30 pm awake
1.45 pm E
2.15 pm S
3.30 pm awake
4.00 pm solids
4.45 pm resisted catnap
5.45 pm bottle
6.00 pm bath
6.15 pm finished off bottle
BT 6.30 pm
Previous day:
6 am WU for day. Bottle around 7 am (argh I wasn't home and it wasn't done when he woke, hubby was confused and tried to offer solids!)
7.45 am S - til 10 am
10.30 am - E
12.15 pm S
2.30 pm E
4.15 pm S catnap
5 pm WU
6 pm bottle/bath/get ready for bed
6.30 pm BT
WU in the night is usually 2 am (feed) and then this babbling business at around 4.30/5am. We don't do a dreamfeed, previously we did this but it seemed to not be working so dropped it. Last night WU was 11.30 pm and then 4.15 am, fed both times (for some reason didn't want much of a BT bottle so I guess this was expected, but isn't the norm). Would always prefer to not feed in those early hours and get him through to breakfast.
It is SUPER interesting what you say about being UT. I have been really focussed on getting him from 1.5 to 2 hours awake time (and am there now) up until recently as he really seemed OT after any more than 1.5 hrs, but maybe he has leapt ahead and needs more than 2 hours awake time!?! Funny he was on 3-3.5 hour feeds FOREVER and would not increase the gap too, now seems much more content with ~4 hrs. He has always been a very very big baby so I had begun to accept his hunger was completely relevant for his size and maybe he was going to play catch up for a few weeks. So I had kind of accepted we were on 3 + catnap for a while yet but forgot that this is always changing!
So I think you might be right. It is 9.40 pm here so I'll give that link you posted a decent look tomorrow morning when my brain is fresh but in the meantime please do comment on my EASY as above. I wish it was a little cleaner and more straight forward sorry, but then again whose baby is exactly perfect at any one point in time huh.(Will point out that my last baby who is now 2 was very much Textbook baby and followed the Hogg book almost as she had written it herself. This one is an Angel baby but without the Textbook leanings if you know what I mean, not nailing all those 'supposed to's')
Thank you!