DD is about 3 months and she is all of a sudden refusing her bottle. Formula, teat, temperature is the same as always, nothing has changed. She just screams and screams when I try to give it to her. She's only had about 350ml since 9.30pm last night and it's now 4pm. She's still having some wet Nappies but obviously not as often as if she were drinking properly. She's been sucking on her fist quite hard like she's hungry but won't have a bottle.
Any ideas or advice would be very much appreciated.