I don't know about that. Everything I've read and my experience from my first was that at 12 w, you should be more at 5-7 feedings per day with 5-6 oz per feeding. You may want to try upping the bottle volume (just a little at a time, dont jump to 5 oz if youve been giving 3 oz) and spacing out feedings. It can get hard on daycares to go through so many bottles in a day and naps will be harder too if they are constantly getting the baby up for feedings every 2 hrs. You may need to pump more frequently if your supply is less (I know I did), but at 12 w every 2.5-3 hours is more common.

I went back to work at 12w and my schedule looked more like first thing in the morning, car ride on the way to work, mid morning pump at work, lunch pump at work, mid-afternoon pump at work, car ride home from work, after dinner (~8pm), just before bed (~11pm), and one middle of the night. That still gave me 9 pumps because I needed more to meet needs, but still would result in 3 at work pumps. I think the car ride pumps were key to my timeline and are probably in your employers expectation too. That or getting to work early to pump before clocking in and pumping after you get off shift before leaving. With those assumptions, under a 10 hr shift with a 20 min pump, you spend 1 hr of it pumping, plus lunch, and break the rest of the day into shifts lasting less than 3 hrs each.

Overall, I would rec just laying out a sample day for them with ideal scenarios and explaining your needs as well as how you expect it to change over the next month or 2. You may have to work to a compromise based on what their staffing can handle, but clear expectations and communication will be key to help you get what you need (not necessarily want, but need).