fussy baby

Hi any mummies enrol their LO in infant care and the baby doesn't sleep? Will it affect baby night sleep after one whole day in infant care?Im enroling my baby in oct and he will be 9 months. He is very cranky and fussy and will need to rock and cradle him to sleep. I tried to put him down and pat to sleep but doesn't work. How can i help him. I am getting paranoid now. Will the teachers over there let him cry cause i know there will be alot of babies to handle. Any experience mummy? I really need to know.