My baby boy was capable of sleeping for 11 hour stretches at night from as young as 6 weeks old - not every night but up until 11 weeks, he would sleep from 7pm to 5am or 7am a couple of nights a week. For the last week, he cannot go for more than 4 hours without waking up starving. For some reason the volume of food that he will take has decreased steadily. He used to take 6 oz and will now only take 4 at each feed. He is being sick more and is harder to wind. I assumed this was a big 12 week growth spurt but why is he eating LESS when I'm trying to get MORE in him at each feed (during the day) so he won't wake up at night? I'm at my wits end. We've had to introduce a dream feed at 11 which doesn't always work. Something must be wrong - could he have developed reflux at 11 weeks? I just don't get it - i desperately want my old baby back.