I had twins 6 weeks ago and they are getting primarily breast milk. But I do need to supplement some. They were premies so they were getting Neosure as a supplement. Now they are to their due date I can go to regular formula. My first had to be on Alumentum due to milk protein allergy. I would love to not have to pay for that again. I don't know if we should just start there right away or try something different first? I was looking at similac pro sensitive or Enfamil gentlease. I don't want to upset their little tummies with switching all the time. Thoughts or suggestions?!