Is anyone else’s 6 week old eating about half what they were eating and sleeping a lot more?! He is formula fed and used to eat about 3-4 oz in one sitting and ate about 26-28 oz a day. Now he has cut both those in half! He will eat maybe an ounce or two and eats about 14-16 oz a day. He is still giving me about 4-6 wet diapers a day and still pooping so I am thinking he is ok... could this be a growth spurt he is going through? Should I just let him sleep??