Prata queen, poor baby. Think not supposed to mix with EBM unless your baby rejects due to taste. Can start with 1 feed of FM per day, then slowly increase after baby accepts it, monitor the poo poo, some babies may be constipated after introducing FM. Give more fruits or water if that's the case. Can you call pd clinic to check? If not, then try a little bit of Nan HA first? Best to let your baby try in the morning when the PD is open, in case of any allergy, can still rush the baby down in time.