A Daycare is very different from having a Nanny... all to himself, just one on one.
Now in Daycare... the entire dynamics is totally different. Larger crowd, more kids, more commotion, different routine, different Caregivers, different expectations there too.
AND, maybe it is not a good fit for him?
He's in great flux. And he's also affected by the other kids there, what goes on, nice kids and not so nice kids etc. So many dynamics. Its like a "culture shock."
Also, maybe the "expectations" there upon him are not in line with his age or maybe it is. Is the group mixed ages, or his age group. This makes a big difference too.
And, his level of communication is certainly not on point nor is a 2 year old fully developed yet at this age... and they simply CANNOT self-manage themselves much less their emotions. Toddlers do not instinctively have "coping skills" for their emotions or thoughts. Rationalization is not fully matured nor capable yet.
Also though, when a kid gets home from school or daycare or preschool... it is like they had a whole day of "work." Its fun but tiring and they get worn out. And if not napping either... they simply short circuit... and then come home and snap.. because they are now home and can then "vent" and be themselves. Versus at school, they are spending ALL day listening to directions and having to behave. Its hard "work" for a little kid. They come home and literally DEFLATE and need to be given space to just vent/deflate/unwind.... and if you try to control "how" they deflate... it can backfire. Meaning for example: when my daughter comes home from school.... I don't instantly nag her or have her do things... I let her just hang out, deflate, vent/talk to me, have a snack, or just lay on the couch like a wilted tired plant.
THEN, once she deflates without pressure... she is her ol' self again. And interacts and can cooperate like her ol' self. I know... when she has had a tiring stressful day at school or not... based on how she comes homes and her demeanor. But a kid has to deflate.... after school/daycare/preschool. Just like a grown-up coming home after a long hard day at work. But the difference is... a grown-up can manage themselves and knows themselves... and can at-will go and turn on the TV, grab a drink, relax and just veg and unwind, and even tell others "be quiet I"m resting" etc., to unwind. A kid can't... they are being told what to do, how to do it, when to do it, etc.
When a kid gets like this, they are just at the end of their rope.
Your son to me is: 2 years old... plus he is still adjusting to his new Daycare and the different demands upon him. And maybe, he is not happy. Can he express himself?
all the best,
Susan