#asktheexpert My baby is 4 months old and I need to join office in next 2 weeks . I am trying to feed her with bottle . She’s taking bm with bottle but rejecting formula with bottle .. Can I mix formula with bm to feed her ? Also with the use of bottle she is spitting a lot of milk sometimes curdled milk sometimes normal even after she took burp .. I am using Philips avent anti colic bottle but still she spits up milk .. Please suggest what should I do to avoid spit ups