Eating too much?

My little one is two months. She’s EBF, she eats about every 1.5-2 hours during the day sometimes at night she will sleep 4 hours.

Is this too often to feed her still? It equals out to around 13 sessions a day it seems like a lot and makes me feel like my milk isn’t filling her. I don’t time when she nurses, and I let her go until she unlatches she takes huge gulps and swallows so I do know she is getting lots of milk..