Hi there
Lokks like Lo is making the transition from 2-1 naps, but the A time in the evening is getting long so has the late nap.
Why don't you join in on the 2-1 sticky and you will find some great advise there. I am no expert but am in the middle of the transition myself.
My LO wakes anything between 6-7:30 and his nap tends to be 12-2 normally. He takes lunch just before the nap and wakes up and snacks on milk and fruit. This is on good days!
HTH
Mukta