My 2 mo old switched to bottles

So i have a question for you ladies that ebf your LO & then introduced a bottle.

Ive now introduced a bottle to my 2 month old yesterday. It took us a while for her to take one & also a couple of tries with other bottles. I pump my milk & give it to her.

Ive noticed though that she only eats about 3-3 1/2 oz of milk every 3 hours. Im wondering if thats normal? When i was ebf her she would eat every 1.5-2 hours for 7 mins & i would only give her one breast & i noticed when i pump i produce 1 oz in one breast & 3 oz in the other.