I have the expandable 8-10 oz drop ins, but my little one is only taking 5 ozs right now. How do I get the air out of the bag? I tried to put the formula in and push up from the bottom, but as soon as I pushed, the formula spurted out of the nipple and there still seemed to be a ton of air in the bag....what am I missing?

Thanks in Advance! =)

Here is what I do. After I put the formula in and shake it up.. I squeeze it on the bottom while squeezing the nipple to let the air out. Sometimes the formula will come out a little but I do get most of the air out. Hope this helps!

Amy