Nipple size help

RobinR91

My girls are 20 weeks actual, 11adjusted. They are bottle fed EBM 5 oz 5 times a day. All 3 are medicated for reflux. Lately they are falling asleep through feeds, and their feeds are taking forever 45 to 60 min each We had been using stage one Bo.rnFree nipples. We switched to stage two today to see how it goes. Two feeds in and reflux issues seem to be at bay, there's just more coughing than I'd like. Am I pushing them into stage two too soon it's for 3 to 6 months or is the coughing just part I'd adjusting to a new flow. I don't know how to factor in their prematurity, or if I even should.
FWIW, all are making appropriate growth and developmental milestones.
TIA!

RobinR91

Ok thanks ladies. I really do feel like they are ready based on their slooooow feeds, but I didn't want to scar anyone with adjusting to something new. I worked so hard for them to like the bottle...I just don't want to ruin it! I'm sure a few days will be plenty to judge if its working for them or not.