Growth spurt ?

So I’ve been told around what months he should be having a growth spurt and every baby is different. Well he’s about to be 3 months and recently hasn’t been eating his regular 4oz he’ll eat 1-2 sometimes 3 and sometimes the whole thing & he’s been SUPER fussy. He isn’t sick so that’s not why. Would you agree he could be going through his growth spurt rn.