Is anyone using these? I am and my month old started eating really weird the last week like she was getting mad at the newborn nipple so I asked my husband to get the next size and we wound up buying level 2s. Well today I decided to try it out and see if this is her issue (my LO doesn't like to work for her milk) and to my amaze she did not choke or anything on this size. And feedings have been much better! Has anyone else already moved up nipple size on these? Or had such a young baby wanting a faster flow nipple?