Calyce milk strike

worsens throughout the day.  Ever since 530pm yesterday whereby she have her last milk, she refuse to take in anything, neither solid or liquid into this morning.  I have to bring her to see Dr Wong, her usual PD for she refuse to take in anything for more than 15 hours.  PD said that she is still acting very normally and doesnt show any signs of dehydration yet at this moment, but we need to be very cautious and ensure that she drinks fluid to retain her hydration.  As baby cant talk, he did his diagnosis based on trial and error.  She have no symptoms of discomfort, not sick and not dehydrated.  So Dr Wong can only assume based on his experience that she could be suffering from gastronomic issues, and could be possibly associating pain with food.  So he prescribed her some medication to relieve pain and soothe the tummy. In addition, he wanted me to record down all her diet timings and quantity and ensures that she still pee at least minimum 4 times a day.  Worse case, if she continues to strike and suffers from dehydration, we may need to send her to the hospital for drip and blood test. But that doesnt solve the problem as she can't be on drip for long too.  We need to solve the root cause and find out the problem of why she is not feeding well.  

Since Dr Wong suggested physcological issues, i begin to wonder if it could be something more serious.  As we were hoping she would eat and drink more, sometimes we will sleep feed her or tries to make her drink and eat more during the day.  Could this actually have backfired?   I really hope Calyce will feel hunger and ask to eat and drink again.  I couldnt bear with the thought that she will need to go on drip as it is very unpleasant thing to do to a baby.. One time with Cepheus is enough, the thought of seeing Calyce on drip hurts me more than anything else.. i really don't want to go through this a second time..