My daughter will be 3 months on Friday. She is normally a pretty active, alert baby. But today she…

My daughter will be 3 months on Friday. She is normally a pretty active, alert baby. But today she has slept 97% of the day. She breastfeeds and gets formula and normally she has about 12oz of each per day so 24oz total but today she has eaten maybe 12 oz total. Is she maybe going through a growth spurt?