Congrats on the new arrival!
make sure nanny has plenty of greens and or good hay.some sweet feed daily won't hurt either. i use godfreys feed made in madison, you can find it at most any feed n tac store.
it may be best to let nanny and baby stay by themselves for the first coupla weeks if possible.
after that i just turn them all out togather and things seem just fine.
keep me posted on how it goes, good luck!!