You’ll have to take the baby out and pass through with him and no carrier.
Baby was asleep in the ergobaby carrier and they let me take her through in it. If it would have beeped then I’d have to take her out to go in the scanner. Just make sure to empty out any pockets beforehand
I had to carry her through in my arms and put the carrier in the scanner with everything else. Take your time and go slow taking him out, ignore everyone else and use the family security lane.