I think I would be tempted to let him sleep for his nap as he wants - if it is teeth (or growth spurt?) then holding steady with the current routine is probably best. I swear E has a gs every month lately, but I know it is usually at the half birthday mark. MIL had her yesterday and she had a late 1 hr nap and did a 10.5 hr night too. When he was falling alseep was he happy and chatty or upset? Though tbh E gets upset when ut at bedtime as she is put out when she has to go to bed and the big girls dont!