My dd is 16 weeks old. She was sleeping through the night (sometimes all night, sometimes waking just once) last month. About 2 weeks ago, she started waking more. She is very hungry and I am sure this isn't comfort eating since she will eat quite a bit (last nights 1st feeding was 6 oz). She is eating more during the day too and while this could be a growth spurt I am beginning to think that my milk just isn't enough for her. She weighs 14 1/2 lbs and just seems to eat and eat. I don't really want to start solids, but I am beginning to think I will have to. What is going on?