I think Phantom is the most likely of this gang to end up biting a bottle nipple off. She gets very grabby when she’s not really hungry and clenches down on the bottle nipple. Sometimes I just set her down with the bottle and that breaks the spell so she can release the bottle.
I’m trying out letting Blaze be with the others, except no unsupervised time with Smudge. I also removed the lid from the carrier-bed so I can see what they are up to. Inappropriate suckling is bad in so many ways.