09:00 sleep 1.5 (I woke him as he was due a feed)
10:40 feed (4)
11:55 sleep 2.5
14:40 feed (4)
15:45 sleep 1hr 45 (very unsettled dummy kept falling out)
OK, do bare in mind I am not there and not seeing their cues. Just from times it looks like there is a slightly longer A before this really long nap. Then the A that follows the long nap is shorter and leads to a restless nap (from memory this was also similar on a previous EASY you posted but I admit I did not look back to double check). It could be that the long nap and the slightly shorter A time following it are just not enough for the next nap to be a relaxing sleep, instead he is unsettled.
I also wonder if the unsettled at midnight could be a little bit of UT because they are getting a good amount of day sleep.
What do you think?
I would be tempted to try either capping the nap at 2hrs to allow for a longer A to follow or if you do not like to cap then to stretch the A another 10 or 15 mins if he seems he could do that with some delaying tactics.
If Leo continues to wake at 6 something for a feed how about treat as NF as you did, straight back to sleep, and then on WU give a top up feed to let him know in the morning (7.30/7.45) there is milk available and also so he can take a 2hr nap if needed/wanted in the morning before his next feed is due? What do you think?