What could be wrong? Sleep Issue from what?

[Artechim]

Given that it started at the exact time that he started daycare I would think the main contributor would be a form of separation anxiety. I am the last person to ask when it comes to getting kids to sleep, but fingers crossed it passes quickly for you xx

[chody47]

I'm not sure if he has an approximate 'routine' when at home or not, but is it a possibility that his routine has altered at childcare (eg more sleep or sleep later in the day) and this is making him less tired at night?