SUPER cranky 17 week old?!

Amy • Married 4/4/2012. Baby #1 born 3/18/17 💙! Boy/girl twins due 2/18/20!

Help! My baby is 17 weeks old and has been so fussy and grumpy since a little before 16 weeks. I'm at a loss as to how to calm him! He's eating all the time now and still sleeps pretty well, so what's up?? Nothing is holding his interest for more than 15 mins and than he'll start grumping. Soon after, he'll have a freak out that only a bottle can (temporarily) soothe. Anyone else go through this??