I probably would just go ahead and push the nap out, no real point in trying it at 12/12:30 if it’s taking him an hour to fall asleep, I’d just go right ahead and try 1:30 instead and cap it at an hour. My DD is not even 2 and her nap is already at 1pm (WU 6:30) so he likely just needs more A in the morning. Capping it to an hour should hopefully help with BT.