Bottle for EBF baby

How much milk is your BF baby take in a bottle? I’m preparing for daycare in 3wks... and I’m terrified she’s going to starve. My first only took 3oz, and only increased it to 3.5iz by the time she turned 1yr. This baby takes 4oz with pace feeding. She nurses every 2hrs during the day still. I have no idea how I’m going to pump that amount! I can’t pump every 2hrs at work, I’ll be pumping every 3hrs. Think she will go longer then 2hrs at daycare or is it pretty similar? It just seems like 4oz at 10wks is a lot?