Daycare and breastfeeding to sleep for 6 month old.

Baby just started daycare with a nanny. He’s only been there 4 days. She says he won’t sleep long and is resisting naps no matter what she does. This means he is very fussy after his first missed nap.

At home I tend to put him on the boob to sleep and he generally naps at the same time everyday without a fuss.

Any advice or similar stories?