12 weeks cranky boy?

Monique • ☀️💙11/28/2018💙💜due 11/30/2020💜👨‍👩‍👧‍👦

Do they get cranky with growth spurts? He doesnt seem to be eating much more, or sleep is normal, but he is drooling so much and much more irritable, he usnt a boy to cry much almost rarely, but past couple days he gets fussy faster..any imput?