new mummy welcome to the dreaded 2-1..
With those EW you can deal with them in 2 ways and this depends on your LO. As Melissa said you can offer the first nap of the day a touch earlier. However, you need to be careful with this as a lot of LOs will tack on their lost night sleep to their first AM nap if it is close to WU. If this happens you encourage the EW IYKWIM. We were in the EW boat for months and had this problem. If I offered a nap too close to WU it reinforced the EW.
If you are going to give the AM nap early then this needs to be the one you cap at 45mins or so, and then offer the PM for as long as he wants to nap.
I don't think you need to transition to 1 nap you are getting great naps out of him
This is true...but the frequent NW some of which are up to an hour playing (is that right?) indicate he is getting too much day sleep, or not enough A time. You certainly don't want to 'jump' to 1 nap, but I do think you need to start capping one of these naps so that your day is shorter. It is so long because of the long naps, and possibly you are in an UT/OT loop.
Generally the AM nap is capped as it is easier to transition. We went the other way for various reasons but I think before anything else you need to work out which nap you will want to cap in the long term and focus on weaning this nap out while other nap will become your 1 Nap of the day and hopefully gradually get longer and closer to midday
So we are officially onto 1 nap days now...Z gets the option of a CN in the car, but never takes it anymore
Our days are looking like this (touch wood they dont come crashing down now I write this)
WU 7
Nap 11.45ish for 2-2.5hours
BT 6.30-7ish.
We are getting STTN most nights but teeth are messing with Z a bit