My baby girl 4 months old, she refuse to drink milk for over 12 hours, after that she will start drink.It start last week till now.Until tonight she drink 4oz after 2 hour 2/3 oz.she start screaming when crying.i not sure she have reflux issue. Milk:similac total comfort

If there has been no change in baby's fm recently then it is unlikely to be the cause. I notice that u also mentioned in another post abt baby vomiting. If she is drinking little and vomiting then pls go doctor immediately. Do note that sometimes when they cry till v agitated will also vomit. 4 month is also the time when some babies have the first tooths emerging. Try the teething gel on the gums half an hr before feed or some pple put the gel (apply a ring of it) directly on teat when they give baby milk