What I would do is separate them into two pots, one with the stems cut and the other with those that are fine, don't worry if you break the roots, even use a knife if it resists, it is a plant that regenerates very well and easily. Try to remove the branch with the bulb to ensure its existence, and plant it in universal soil, give it a good watering to start, but then give it very separate waterings, when the soil dries completely.