How fast does your baby eat?

Yesterday I drank part of the day and gave my son expressed breast milk out of a bottle. He always had issues eating too quickly, even at my breast. He literally drank 5 ounces in 5 minutes. I gave him 3 oz and then 1 and 1 after he was finishing it all quickly and burped in between. However he still drank it all in 5 minutes put together. Is this normal??? He has silent reflux and isn’t spitting any up. He also went to sleep after rocking and didn’t have any issues during the night. We are using newborn nipples and he is 6 weeks. Also using comotomo and mam newborn bottles.