If the mixture you are feeding off the spoon is a little thicker you will get these air bubbles. Try thinning down the formula a little and see if it makes a difference.
Thanks, I'll try that on the next feed. :feedbirds:
I tried thining the mix. They still seem to be taking in air. Will the air cause any problems? A friend took some photos of my babies and i will try to put some on soon.