8 week old eating less and sleeping more during growth spurt?

My LO is just about to hit 8 weeks and today he has been less interested in eating and is taking 2/3 Oz at each feeding, which seem to be very inconsistent of his normal every 3/4 hours. He normally takes 4/5 oz at each feeding. He also has been sleeping most of the day, which he had been up a lot more the past two weeks. I did notice he seemed a bit more hungry yesterday and eating twice during the night (he normally only gets up once). Is it possible to sleep through a growth spurt?