My baby is 11 months old. He is not drinking water . For the past three weeks he is not drinking water , I introduced water through feeding bottle, cup, glass, through filler . Nothing works. I'm giving him food in semi solid consistency to keep him hydrated. Apple puree etc. He doesn't want water.my breast milk supply is low , I feed him 4 times a day.. He urinates more than 5 times (low volume and normal volume) . But poop is like rock hard. Does this cause any problem? Should I take him to hospital immediately??