I will tell you what we did, because your day looks similar and it seems your LO is doing kind of what Z did
We had rules I worked on
1) if WU was before 6am then we would do a 2 nap day. Ie nap + CN
2) if WU after 6 and nap 2.5/3 hrs or went past 1pm we did 1 nap day with EBT of 6pm (or 5 hrs after WU)
3) if nap WU before 1pm I did a CN and BT 2/2.5 hrs later.
So a CN day would be like
WU 6
Nap 10.30-12.30
CN 4.30-5 (I aped this in the car)
BT 7
A no CN day was
WU 6.30
Nap 11-2
BT 6.30/7
I did find we would have some days the CN was refused so then straight to bed.
Overall night sleep improved. If I got too many EW or NW I knew OT was coming so I would pull back a times a touch and do CN days, or APOP to resettle the main nap.
If I got a nap of less than 1.5 for the main nap i tried to ap back to sleep, or we stayed in the room in the dark till 1.5 hours so DS got used to napping that long.
HTH.

Oh and totally join the 2-1 support thread in naps. It's Great for day to day support!
(I just realised your nap was later but you get the idea

)