C is 16.5mo. This has been his routine for about 2 months
WU: 8am (I usually have to wake him - up tills a week ago he would sleep till 10am if I let him, sometimes 11am - this last week he has been waking naturally around

S: 12.30-2.45 (again I had to wake him - this last week I have limited nap to 2 hours between 12.45-2.45 though)
BT: 6.45/7 usually no NW's but sometimes one at 4/5am and he has milk and straight back to sleep.
This week a few times he has chatted for a bit at bedtime before falling asleep and last night he had a NW at 10-11, he was just awake and wanted up to play, milk or cuddles didn't settle him but after an hour milk eventually did.
I know I don't have major problems but just trying to prevent any, do you think I need to change anything? I know he is higher sleep needs than most and 4.75A works well in the morning, he could prob go to 5 but then I would have to get him up after 1.45 nap to do the school run? I'm not sure about the afternoon A, is it usually the same, longer or shorter than morning?