probably because your little poppet is OT still. dont doubt yourself, youre her mum, you know her best!!! Im just a lady on the computer
What i can try and suggest (bearing in mind of course like previous poster said, that she does suffer with reflux etc) is try pushing her A time gradually, like 10mins more every couple of days until you can find the A time that suits her the best.
Have you tried asking around for the liquid losec? how much is she on? Caleb takes 2.5mls of a 2mg dose and apparantly thats the max, it doesnt change with age or weight and we only give it once in the morning. I always think its ridiculous when they expect little babies to take things not in liquid form