Night Terrors?

Is it possible for our June babies to be having night terrors already? Everything I’ve read says it usually occurs in older children (3 and up) but our guy has been suddenly sitting up, screaming, crying, and thrashing around in the middle of the night. Every time we go to get him he falls back asleep almost instantly. It’s the strangest thing but happens about twice a night now. He has been sleeping 12 hours per night since about 6 months old so this is not usual for him. Just curious on others thoughts/experiences!