Nai miss J did exactly the same thing late last year. Screaming mess at drop off but fine within 5 or so minutes. She got over it within a month but it was so stressful. I found distraction the best method. I would get her to help me put on my lipstick or perfume when we got there and then put a little perfume on her top. She would then happily go off to show the carers and her friends. Seemed to just help her to get over whatever was going on.

Janie xxx