I have five 9oz and four 5 oz and I rotate which I use
Same! I have just about two “sets” that I switch between while yesterdays bottles sterilize and/or dishwash.
3 main bottle plus 1 extra and his water bottle. Total, 5. I hate washing bottles, so the less than better.
We handwash and sterilize or we use dishwasher with 50% scrubbing and then we sterilize. We have about 12 which we rotate and use. She uses about 6-7 a day